Answers

2015-12-13T07:46:00+05:30
Arrangement of electrons in shells or energy level
0
2015-12-13T09:08:21+05:30
It refers to the arrangement of the Electron on the basis of the Aufbua principle and Hunds rule. i.e; the electrons are arranged in the lower energy shell first an the higher ones next.It has an order:
1s>2s>2p>3s>3p>3d>4s>4p>4d>4f>5s>5p>5d>5f>6s>6p>6d>7s>7p>8s
In the order the electrons are filled.
1 5 1