Question

Write the complete electron configurations with spaces between the sublevels. If you do not format correctly your answers will all be incorrect.

For example:

1a1 2b2 3c3 4d4

The ion configuration for an O-2 ion is (answer)

Answer 1

O

2−

:

Step-by-step explanation:

The atomic number of O=8=number of electrons

Number of electrons in O

2−

are 8+2=10

Electronic configuration will be 1s

2

2s

2

2p

6