2.The image below shows two nitrogen atoms. For these two atoms to form a stable molecule, N2, how many electrons would have to be part of covalent bonds?

Answers

Answer 1

Answer:

D. 6 electrons

A single nitrogen atom has five electrons in its outer energy level to start, and will be most stable with an octet, or 8 electrons in its outer level.

Answer 2

Answer: Since N2 is a covalent bond, the lewis dot structure of N2 would have a triple bond. Each bond contains 2 electrons, so if it has a triple bond it contains 6 electrons.
Calculate the number of valence electrons of N2
N= 2x 5 = 10
N2 has a total of 10 valence electrons, to become stable each N atom needs 8 electrons.
So, therefore, 6 electrons would have to be a part of covalent bonds because they share 6 electrons in a triple bond.

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For the same mixture, under the same conditions described in problem 7, calculate keq for 2nh3 (g) n2 (g) + 3h2(g). how is the keq for a forward reaction related to the keq for a reverse reaction

Answers

Answer: The relation between the forward and reverse reaction is $K_f=(1)/(K_r)$

Explanation:

For the given chemical equation:

$2NH_3(g)\rightleftharpoons N_2 (g)+3H_2(g)$

The expression of equilibrium constant for above equation follows:

$K_f=([N_2][H_2]^3)/([NH_3]^2)$ .......(1)

The reverse equation follows:

$N_2 (g)+3H_2(g)\rightleftharpoons 2NH_3(g)$

The expression of equilibrium constant for above equation follows:

$K_r=([NH_3]^2)/([N_2][H_2]^3)$ .......(2)

Relation expression 1 and expression 2, we get:

$K_f=(1)/(K_r)$

Hence, the relation between the forward and reverse reaction is $K_f=(1)/(K_r)$

Give the number of valence electrons for each of the following: Ba, Al, P, Se, Br, K

Answers

Ba: 2
Al: 3
P: 5
Se: 6
Br: 7
K: 1

Hope this helps!

For each molecule, what should be determined? A) Number of pi bonds and if they are delocalized. B) Number of sigma bonds and if they are localized. C) Number of hydrogen bonds and if they are polarized. D) Number of covalent bonds and if they are ionic.

Answers

Answer:

Explanation:

A) Number of pi bonds and if they are delocalized:

Determine the number of pi (π) bonds in the molecule. Pi bonds are formed by the overlap of p-orbitals in a double or triple bond.

Assess whether these pi bonds are delocalized. Delocalization occurs when electrons in pi bonds are not localized between just two atoms but are spread out over multiple atoms or regions within the molecule. This typically involves resonance structures in organic chemistry.

B) Number of sigma bonds and if they are localized:

Determine the number of sigma (σ) bonds in the molecule. Sigma bonds are formed by the head-on overlap of atomic orbitals in single bonds.

Assess whether these sigma bonds are localized. In most cases, sigma bonds are localized between two specific atoms, meaning they involve a direct bond between those atoms.

C) Number of hydrogen bonds and if they are polarized:

Determine the number of hydrogen bonds in the molecule. Hydrogen bonds are a special type of dipole-dipole interaction involving hydrogen atoms bonded to highly electronegative atoms (such as oxygen, nitrogen, or fluorine) and other electronegative atoms.

Assess whether these hydrogen bonds are polarized. Hydrogen bonds involve a difference in electronegativity between the hydrogen atom and the electronegative atom, creating a polar bond. The extent of polarization can vary depending on the specific atoms involved.

D) Number of covalent bonds and if they are ionic:

Determine the number of covalent bonds in the molecule. Covalent bonds involve the sharing of electrons between atoms.

Assess whether these covalent bonds are ionic. Covalent bonds are typically characterized by the sharing of electrons, while ionic bonds involve the complete transfer of electrons from one atom to another, resulting in ions. Covalent bonds are typically nonpolar or polar, while ionic bonds are highly polar.

The table below gives information about the nucleus of each 4 atoms Atom Number of protons Number of neutrons

A 6 6

D 6 7

G 7 7

E 7 8

How many different elements are represented by the nuclei in the table?

A 1

B 2

C 3

D 4

Answers

Atom Number of protons Number of neutrons. 2 elements are represented by the nuclei in the table

What is the difference between atomic number and atomic mass ?

Atomic number of an element is defined as total number of protons present in the nucleus, neutrons carry no net electrical charge, so it is the charge number of the nucleus.

atomic mass of an element can be defined as the atomic weight is measured total mass of an element’s atom, the total number of neutrons and protons in the nucleus of an atom.

Both Atomic mass and an atomic number of elements are closely related if atomic number is high, then the atomic mass is also said to be high.

For more details regarding fire atomic number , visit

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Answer:

Explanation:

BECAUSE IT IS B.

How to calculate molar mass

Answers

Molar masses of chemical compounds are equal to the sums of the molar masses of all the atoms in one molecule of that compound. After that, If you have a subscript in a chemical formula, then you multiply the number of atoms of anything next to that subscript by the number of the subscript. I'm kinda new to this stuff. Hopefully I helped :/

Molar mass is the sum of all atomic masses in a given compound in relative grams. To explain how to calculate the Molar mass, let me show you an example.

Calculate the Molar mass of H2O

now, atomic mass of H - 1
Atomic mass of O - 16

Now, molar mass = 1(2) + 16

= 2 +16
= 18 u = 18 grams (relative mass in grams)

What is the charge on a chloride ion? What does chlorine have to do to form such an ion, and whydoes it tend to do so?

Answers

Answer:

The chloride ion has a -1 charge and it tends to form such an ion because it wants the octet rule to be complete, and since it has 7 it needs one more for 8 electrons.

Hope this helps!

Explanation:

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