Question

State the electronic configuration of the following elements and state whether they are metals, non-metals, or inert gas

${}_3{}^{}\mathrm{A}$

Answer 1

Electronic configuration — The distribution of an electron in a given shell, orbital, or sub orbitals is known as electronic configuration

• The arrangement of electrons in energy levels in the shell of the atom.
• The electronic configuration is also known as electronic structure.
• It also helps to predict whether the element is metal,non-metal, or metalloid.
• If their outermost shell has 1,2,3 electron are considered metal except for H, He, B.
• Thus, the electronic configuration of the given element is-

Thus, ${}_3{}^{}\mathrm{A}$ — 2,1, the element is lithium, is a metal.