Electron Configuration

Question 1

Which is the most stable configuration of a Fe (II) ion?

Accepted Answer

1s2 2s2 2p6 3s2 3p6 3d6

Question 2

Which element does not contain electrons in a d orbital?

Accepted Answer

Calcium

Question 3

How many orbitals contain only one electron each in a neutral nitrogen atom?

Accepted Answer

3

Question 4

What is the last electron to fill in an oxygen atom?

Accepted Answer

2p4

Question 5

If an electron drops down from n=5 to the ground state of n=1, what is most likely to occur?

Accepted Answer

A photon is emitted

Question 6

What element has the ground state electron configuration 1s2 2s2 2p6 3s2 3p3?

Accepted Answer

Phosphorus

Question 7

What is the shorthand electron configuration for an Iodide ion?

Accepted Answer

[Kr] 5s2 4d10 5p6

Question 8

Which is the electron configuration of an Fe atom in the ground state?

Accepted Answer

1s2 2s2 2p6 3s2 3p64s23d6

Question 9

Which is the correct electron configuration for Copper

Accepted Answer

1s2 2s2 2p6 3s2 3p6 4s1 3d10, 1s2 2s2 2p6 3s2 3p6 4s2 3d9

Question 10

Which atomic subshell fills with electrons first: 3d or 4s?

Accepted Answer

4s

Question 11

Which element has a valence shell with five electrons?

Accepted Answer

Bismuth

Questions 11