chemistry laboratory report Experiment 9

100

QUESTIONS:

1. complete the following table by filling in the missing information.

(a) (b) (c) (d)

Atom Mg

Atomic number

Mass number 25 59

Protons in nucleus l7 Neutrons in nucleus 18 22

No. of ls electrons

No. of 2s electrons

No. of 2p electrons

No. of 3s electrons

No. of 3p electrons

No. of 3delectrons

No. of 4s electrons

1't 2s electron

2"d 2s electron

1't 2p electron

2"u 2p electron

3'u 2p electron

6

7

0

lll 3mlIn

4* 2p electron

2' Assign the set of four quantum numbers to the last six electrons (2s22p4) of an oxygen atom.