How many electrons maximum can exist in the 4d orbital

1
How many electrons maximum can exist in the 4d
orbital?

• 2
• 6
• 10
• 14

2
Correct Answer

• 2
• 6
• 10
• 14

There are five 4d orbitals, each of which can
contain up to 2 electrons each for a total of 10
maximum.
3
The electron subshell 3p represents the principal
quantum number n ___ and azimuthal quantum
number l ___.

• 3 2
• 2 3
• 3 1
• 1 3

4
Correct Answer

• 3 2
• 2 3
• 3 1
• 1 3

The principal quantum number n is 3, and a p
orbital indicates l 1.
5
The maximum number of electrons in an atom that
can exist in the 4f subshell and have ml ?1 is

• 2
• 7
• 14
• 32

6
Correct Answer

• 2
• 7
• 14
• 32

For any value of ml, the maximum number of
electrons is 2.
7
The following orbital diagram represents the
electron configuration of which element?
1s
2s
2p

• Carbon
• Nitrogen
• Oxygen
• Neon

8
Correct Answer
1s
2s
2p

• Carbon
• Nitrogen
• Oxygen
• Neon

9
The element with the electronic configuration
Ar4s13d5 is

• Manganese
• Chromium
• Magnesium
• Iron

10
Correct Answer

• Manganese
• Chromium
• Magnesium
• Iron

11
What is the characteristic outer shell electron
configuration of the noble gases?

• s2p6
• s2p5
• s2p4
• s2p3

12
Correct Answer

• s2p6
• s2p5
• s2p4
• s2p3

Noble gases have completely filled s and p
orbitals, hence their lack of reactivity.
13
Which of the following orbital diagrams obeys
Hunds rule for a ground-state atom?
14
Correct Answer

3s
3d
3s
3d
3s
3d