Question

write the number of unpaired electrons in a atom of an element with atomic number 15​

Answer 1

Answer:

The atomic number of the element having maximum number of unpaired 3p electrons is (in ground state) is 15. In 3p orbital, a maximum of 3 unpaired electrons are possible. The electronic configuration of the atom is 1s

2

2s

2

2p

6

3s

2

3p

3

.

The atomic number is 2+2+6+2+3=15.

The element is phosphorous.