Question

Answer all the following multiple choices with the right answer.

Question 1

Which object(s) would you use to describe the shape of the 2p orbital?

Question 1 options:

a)

a circle

b)

a sphere

c)	a dumb-bell

d)	two perpendicular dumb-bells

e)	a doughnut

Question 2

Which situation must be true for two electrons to occupy the same orbital?

Question 2 options:

a)	The electrons must have low energy.

b)	The electrons must have identical sets of quantum numbers.

c)	The electrons must have the same principal quantum number, but the other quantum numbers must be different.

d)	The electrons must have the opposite spin.

e)	The electrons must have the same spin.

Question 3

Which element contains a full 3s orbital?

Question 3 options:

a)

Ne

b)

Be

c)

Mg

d)

Na

e)

B

Question 4

Which element has the ground state electron configuration [Ne] 3s²3p_x¹3p_y¹ for its valence electrons?

Question 4 options:

a)

S

b)

P

c)

Al

d)

Mg

e)

Si

Question 5

Which electron configuration represents a reactive non-metallic element?

Question 5 options:

a)	1s2 2s2 2p6 3s2 3p6

b)	1s2 2s2 2p6 3s2 3p1

c)	1s2 2s2 2p6 3s2 3p5

d)	1s2 2s2 2p6 3s2 3p6 4s2

e)	1s2 2s2 2p6 3s2

Question 6

What is the total number of electrons in the 2p orbitals of a sulfur atom at ground state?

Question 6 options:

a)

2

b)

4

c)

6

d)

8

e)

3

Question 7

Which sublevel, when full, corresponds to the first row of transition elements?

Question 7 options:

a)

3f

b)

4d

c)

3d

d)

4f

e)

4p

Question 8

Which sublevel, when full, corresponds to the lanthanide series of elements?

Question 8 options:

a)

3d

b)

3f

c)

4f

d)

5f

e)

4d

Question 9

Which pair of atoms and/or ions is isoelectronic? (Have the same number of electrons)

Question 9 options:

a)	Ca2+ and Cl-

b)	F- and N2-

c)	O2- and Cl-

d)	Li+ and Na+

e)

K+ and Kr

Question 10

Which atom or ion is isoelectric with Ar?

Question 10 options:

a)

Cl

b)

S-

c)

P2-

d)

K

e)

Ca2+

Answer 1