How can a element share it's electrons with other elements?

QUESTION POSTED AT 13/02/2020 - 10:07 AM

Related questions

Why do electrons in a copper penny not fly out?

Copper is a good conductor because, like other metals, it contains free electrons. Free electrons are also known as conduction electrons. Each copper atom provides a single free electron, so there are as many free electrons as atoms.

Free electron concentration in copper n = 8.5 × 1028 per m3


When a voltage is connected across a piece of copper, it pushes the free electrons so that they flow through the metal – that's an electric current.




Interactive graphic of electrical conduction
Interactive graphic of electrical conduction

Picture 3.4 Close the switch to apply voltage: electrons start to flow through. Increase the voltage and they drift faster.

About current

Notice that the electrons start to flow as soon as the switch is closed. The message to get them moving is instantaneous (in fact it travels close to the speed of light). However, the electrons themselves travel much more slowly. So how does the current come on everywhere as soon as the switch is closed?
It is because the free electrons are already spread through the wire. As soon as the switch is closed, there is a force on all the electrons, which gets them moving. It's a bit like a bicycle chain. As soon as you start pedalling, the back wheel starts to turn. The force on the back wheel is instantaneous even though the individual links are travelling at a visible speed. But because the links are already spread around the chain 'circuit' they all start to move at the same time.


Electron velocities

The animation above is slightly deceptive because it shows the electrons as being stationary when there is no voltage.
In reality, even when no current flows through a piece of copper, the free electrons are moving rapidly about. Their speed is about 106 m s-1; that's 3000 times the speed of sound in air! However, since they are moving at random, there is no net flow of electrons in any particular direction and so there is no current.

When a voltage is applied, the electrons gain an additional velocity, so that there is a net flow along the wire. This extra velocity is called their drift velocity. Here's a way to picture this:

ANSWERED AT 28/02/2020 - 05:05 PM


QUESTION POSTED AT 28/02/2020 - 05:05 PM

How many protons neutrons and electrons does nitrogen 14 have?

Many nitrogen atoms have seven neutrons (14-7 = 7). Some atoms of nitrogen, however, have eight electrons. They are atoms of N-15, an isotope of nitrogen. In a neutral atom, the number of protons must equal the number of electrons.

ANSWERED AT 28/02/2020 - 04:57 PM


QUESTION POSTED AT 28/02/2020 - 04:57 PM

Nuclear energy is produced when scientists force uranium (U) atoms to break apart. With this in mind, examine the list below. If scientists were to break apart each of the items on the list, which items would still be classified in the same way? Which items would be classified differently? • atoms • elements • compounds • molecules • matter

Answer:

Compound.

Explanation:

A compound is a made up of two or more than two different elements. It can be broken down into smaller molecules.Elements are combined to form a compound by chemical bonding like ionic bonding and covalent bonding.

Different compounds of different elements can be broken down into the chemical reaction called decomposition reaction. For example:

Using electrolysis, we can break down water into its elements hydrogen and oxygen.    

ANSWERED AT 28/02/2020 - 04:06 PM


QUESTION POSTED AT 28/02/2020 - 04:06 PM

An atom of an element has 28 innermost electrons and 7 outermost electrons. In which period of the Periodic Table is this element located? 1. 5 2. 2 3. 3 4. 4

Answer: The given element belongs to Period 4.

Explanation:

We are given:

Number of innermost electrons = 28

Number of outermost electrons = 7

Total number of electrons = 28 + 7 = 35

Electronic configuration is defined as the representation of electrons around the nucleus of an atom.

Number of electrons in an atom is determined by the atomic number of that atom.

The electronic configuration of the element having atomic number '35' is:  1s^22s^22p^63s^23p^64s^23d^{10}4p^5

To identify the period, we look at the highest occupied principle quantum number which is 'n'. Here, the value of highest occupied shell or 'n' is 4.

Hence, the given element belongs to Period 4.

ANSWERED AT 28/02/2020 - 03:57 PM


QUESTION POSTED AT 28/02/2020 - 03:57 PM

Write the symbol for every chemical element that has atomic number less than 74 and atomic mass greater than 173.8u

You should be able to locate them on the periodic table as long as you know which part the atomic number is and which part the atomic mass is.

ANSWERED AT 28/02/2020 - 03:22 PM


QUESTION POSTED AT 28/02/2020 - 03:22 PM

Who first arranged the elements according to nuclear charge?

 dmitri Medeleev is the man

ANSWERED AT 28/02/2020 - 02:47 PM


QUESTION POSTED AT 28/02/2020 - 02:47 PM

How many electrons are needed to completely fill the second level energy? The third? The fourth?

The maximum number of electrons that an energy level can hold is determined from the formula 2n^2 equals the total number, where n is the energy level.  The first energy level holds 2*1^2=2 electrons while the second holds 2*2^2= 8 electrons.

ANSWERED AT 28/02/2020 - 02:04 PM


QUESTION POSTED AT 28/02/2020 - 02:04 PM

How many electrons can the n=4 shell hold? a. 8b.16c.32d.64?

Answer:

c.32

Explanation:

Hello,

In this case, it is possible to determine it by building the subshells organization for the first four shells as shown below:

1s^2\\2s^2\ 2p^6\\3s^2\ 3p^6\ 3d^{10}\\4s^2\ 4p^6\ 4d^{10}\ 4f^{14}

In such a way, counting the electrons at the n=4 shell, the result is 32 (2+6+10+14), so the answer is c.

Best regards.

ANSWERED AT 28/02/2020 - 01:30 PM


QUESTION POSTED AT 28/02/2020 - 01:30 PM

Elements and compounds are 2 types of what?

Compounds. ... When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl). Hope it helped!

ANSWERED AT 28/02/2020 - 11:40 AM


QUESTION POSTED AT 28/02/2020 - 11:40 AM

Why is activation energy required to start some reactions? A.)to break the bonds of an endothermic reaction B.)to overcome electron repulsion of an endothermic reaction C.)to overcome electron repulsion of an exothermic reaction D.)to provide sufficient energy to keep a reaction going

Answer: D.) to provide sufficient energy to keep a reaction going

Explanation:

Activation energy is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.

A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more molecules can cross the energy barrier and convert to products.  It is required for both endothermic and exothermic reactions.

The catalyst itself does not take part in the chemical reaction and is regenerated as such at the end.

ANSWERED AT 28/02/2020 - 11:30 AM


QUESTION POSTED AT 28/02/2020 - 11:30 AM

The elements which make up water can only be separated by chemical means. That means water is __________. a. a mixture b. an element c. a solution d. a compound

Water is a compound because it is made up of two elements.

ANSWERED AT 28/02/2020 - 11:20 AM


QUESTION POSTED AT 28/02/2020 - 11:20 AM

Write the ground state electron configuration for the phosphorus atom

It's 1s2 2s2 2p6 3s2 3p3. 

ANSWERED AT 28/02/2020 - 07:54 AM


QUESTION POSTED AT 28/02/2020 - 07:54 AM

How many elements are on the Periodic Table?

118 elements (^.^)/)

ANSWERED AT 28/02/2020 - 07:19 AM


QUESTION POSTED AT 28/02/2020 - 07:19 AM

A loss of electrons by an atom creates an anion? true or false

False, a loss of electrons would make the atom positive, it will become a Cation. 

ANSWERED AT 28/02/2020 - 07:09 AM


QUESTION POSTED AT 28/02/2020 - 07:09 AM

Which electron configuration represents an excited state for an atom for calcium 1. 2-8-7-1 2. 2-8-7-2 3. 2-8-7-3 4. 2-8-8-2

The electron configuration that represent an excited state for an atom of calcium is 2, 8, 7, 3.

Calcium atom has an atomic number of 20 and its electronic configuration is 2, 8, 8, 2. An atom is said to be in an excited state if it gains energy and move to an higher energy level. For the calcium atom given above, there are 20 electrons which are distributed into four shells. But in the excited state [option 3], one of the 8 electrons in the third shell gains energy and move to the fourth shell. Thus, the number of electrons in the third shell reduced by 1, while the number of electrons in the fourth shell increase by 1.

ANSWERED AT 28/02/2020 - 07:01 AM


QUESTION POSTED AT 28/02/2020 - 07:01 AM

The elements found in Group 2A, from top to bottom, include beryllium, magnesium, calcium, strontium, and barium. Which of these elements has the highest electronegativity value?

Electronegativity is the property of the element to attract electrons to its nucleus. The trend of electronegativity in the periodic table is decreasing from right to left and decreasing from top to bottom. hence from the given elements, the element with the highest electronegativity should be A.beryllium 

ANSWERED AT 28/02/2020 - 06:54 AM


QUESTION POSTED AT 28/02/2020 - 06:54 AM

Which sentence about particles in matter is true? A. Atoms are present in solids and liquids but not gasses B. The particles of matter are in constant motion C.The same kinds of atoms found in different element D.When a solid changes to a liquid, the sizes of the particles change

Answer;

B. The particles of matter are in constant motion

Explanation;

  • Matter is anything that has weight and occupies space. It occurs in three states namely, gases, liquids and solids.
  • All matter is made up of tiny particles that are in constant motion.
  • According to kinetic theory of matter, matter is made of many particles, that is atoms or molecules, that are in constant motion.
  • In gases, the motion of particles are in constant random motion, they move freely. In liquids, the motion is constrained by the liquid's volume, while in solids the motion of particles is greatly constrained to a small space.

ANSWERED AT 28/02/2020 - 05:26 AM


QUESTION POSTED AT 28/02/2020 - 05:26 AM

Which of the following does not describe elements? A. They are uniform throughout. B. They can be separated by a chemical reaction. C. They cannot be separated by physical means. D.They are listed on the periodic table.

B. Elements are pure and therefore have nothing to be separated from when they are a singular atom.

ANSWERED AT 28/02/2020 - 04:28 AM


QUESTION POSTED AT 28/02/2020 - 04:28 AM

Milikian's oil method for measurement of charge of an electron

A ruler
that one is true

ANSWERED AT 28/02/2020 - 04:05 AM


QUESTION POSTED AT 28/02/2020 - 04:05 AM

. When determining valence electrons, what are the sublevels that you must consider?

With what we have already discussed, you might realize that just as electron configurations can be used to explain the shape and organization of the Periodic Table, the shape and organization of the Periodic Table can, in turn, be used to predict electron configurations. In fact, if you can locate an element on the Periodic Table, you can use the element's position to figure out the energy level of the element's valence electrons 

ANSWERED AT 28/02/2020 - 03:57 AM


QUESTION POSTED AT 28/02/2020 - 03:57 AM

Nuclear energy can come from a. radioactive elements. b. nuclear power plants. c. certain types of rocks. d. all of these can produce nuclear energy.

D. all of these can produce nuclear energy

ANSWERED AT 28/02/2020 - 03:39 AM


QUESTION POSTED AT 28/02/2020 - 03:39 AM

What is the conduction electron concentration?

In electrical conduction, energy is transferred by the movement of electrons or ions. Compare convection. See also radiation. Our Living Language: Heat is a form of energy that manifests itself in the motion of molecules and atoms, as well as subatomic particles

ANSWERED AT 27/02/2020 - 01:16 PM


QUESTION POSTED AT 27/02/2020 - 01:16 PM

At room temperature, a melting solid produces a whitish liquid. A laser beam shined through the liquid is unaffected and produces a distinct beam of light. The liquid is _________. a heterogeneous mixture an element a solution a colloid

Answer: The liquid is a solution.

Explanation:

A heterogeneous mixture is defined as the mixture in which component are unevenly spread throughout the solution. The size and shape of the particles differ in these mixtures. These mixture scatter the light falling on it.

An element is defined as the substance which is made of similar kind of atoms. All the atoms in an element have same atomic number.

A solution is defined as the solution in which the components gets completely dissolved in it. Particles are evenly spread in these solutions. These solution does not scatter light falling on it.

A colloid is defined as the mixtures when physical boundary is seen between the dispersed phase and dispersed medium. They scatter the light falling on it.

We are given a liquid which when dissolved in water forms a whitish liquid and does not affect the light falling on it.

Hence, the liquid is a solution.

ANSWERED AT 27/02/2020 - 10:47 AM


QUESTION POSTED AT 27/02/2020 - 10:47 AM

What are the characteristics that describe and element

All elements have certain characteristics that are summarized on the periodic table. These characteristics include the element's symbol, atomic number, and atomic mass. You will learn how the number of protons in an atom relates to an element'satomic number, and explore how isotopes affect the atomic mass.

ANSWERED AT 27/02/2020 - 10:39 AM


QUESTION POSTED AT 27/02/2020 - 10:39 AM

Which element has the most metallic character, silicon sodium sulfur or thallium?

Sodium has the most metallic character.

ANSWERED AT 27/02/2020 - 09:41 AM


QUESTION POSTED AT 27/02/2020 - 09:41 AM

Which element has the most metallic character, silicon sodium sulfur or thallium?

Sodium correct me if im wrong.

ANSWERED AT 27/02/2020 - 09:41 AM


QUESTION POSTED AT 27/02/2020 - 09:41 AM