General Chemistry 2 Exam

Give the number of core electrons for Cadnium

46

How many unpaired electrons does a ground state atom of chromium have?

6

How many valence electrons does a ground state sulfur atom have?

6

How many valence electrons do the halogens possess

7

Which reaction below represents the second ionization of Strontium

Sr+ (g) --> Sr2+(g) +e-

Place the following in order of decreasing radius: Te2 2-, F-,O2-

Te2 2- > O2- > F-

Ground state electron configuration for Selenium

[Ar] 4s2, 3d10,4p4

Choose the ground state electron configuration for Zn2+

[Ar]3d10

Choose the ground state electron configuration for Zn 2+

[Ar]4s2,3d10,4p4

Ground state electron configuration for lead

[Xe]6s2, 4f14,5d10,6p2

Which of the following statements is substantially true?

a covalent bond has a lower potential energy than the two separate atoms

A cation of +2 indicates that an element has

lost two electrons

Which molecule or compound below contains a pure covalent bond

Cl2

How many unpaired electrons are present in the ground state krypton atom

0

Choose the orbital diagram that represents the ground state of N.

1s2, 2s2, 2p3

Give the electron ground state electron configuration for the oxygen atom

1s2,2s2,2p4

Give the complete electron configuration for Manganease

1s2,2s2,2p6,3s2,3p6,4s2,3d5

How many of the following elements have 1 upaired electron in the ground state: B, Al, S, Cl

3

How many valence electrons does an atom of aluminum possess?

3

A triple covalent bond contains_______ of electrons

3 pairs

Which of the following statements is TRUE?

An orbital that penetrates into the region occupied by core electrons is more shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy

Place the following elements in order of increasing atomic radius: P, Ba, Cl

Cl < P <Ba

When filling degenerate orbitals, electrons fill them singly first, with parallel spins is known as

Hund's Rule

Place the following elements in order of increasing electronegativity: K, Li, H, O

K < Li < H < O

Which reaction below represents the electron affinity of Li

Li(g)+ e- --> Li- (g)

List the following compounds in decreasing electronegativity difference: Cl2, HCl, NaCl

NaCl > HCl > Cl2

Which reactions below represents the first ionization of O?

O(g)--> O+(g)+e-

no two electrons in the same atom can have the same set of four quantum numbers is known as the

Pauli Exclusion Principle