Question

which is not an alkali metal
na mg cs k​

Answer 1

Answer:

They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). (Like the other elements in Group 1, hydrogen (H) has one electron in its outermost shell, but it is not classed as an alkali metal since it is not a metal but a gas at room temperature.)

Answer 2

Explanation:

mg is not an alkali metal