Question

Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.

Answer 1

Metal A with electronic configuration (2, 8, 1) is more reactive than metal B with electronic configuration (2, 8, 8, 2). This is because the metal A can lose its one electron more easily as compared to metal B with two electrons.
Metal A = Sodium
Metal B = Calcium