Question

If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d² 4s², the four electrons involved in chemical bond formation will be ______.

Options

• 3p⁶

• 3p⁶, 4s²

• 3p⁶, 3d²

• 3d², 4s² 

Answer 1

If the electronic configuration of an element is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d² 4s², the four electrons involved in chemical bond formation will be 3d², 4s².

Explanation:

The electrons involved in the formation of any chemical bond are the valence shell electrons. In the given electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d² 4s² , the valence shell electrons are in d-orbital and s-orbital.