Question

•An element whose third shell contains two p electrons

Answer 1

Thank you for posting you question here. The Shell 3, across the third period it takes only 8 electrons while shell 1 has 2 potential electrons and shell 2 also has 8 potential electrons. I hope the answer helps. Happy to help you. 

Answer 2

Answer: The element whose third shell contains two p electrons is, silicon.

Step-by-step explanation:

Electronic configuration : It is defined as the representation of electrons around the nucleus of an atom.

Number of electrons in an atom are determined by the electronic configuration.

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

As per question the electronic configuration will be,

`1s^22s^22p^63s^23p^2`

The total number of electrons = [2 + 2 + 6 + 2 + 2] = 14

The atom having atomic number 14 is silicon.

Hence, the element whose third shell contains two p electrons is silicon.