Question

An atom of element has one electron in the outermost M shell. State its
a) Electronic configuration and valency of the element
b) Atomic number and Number of protons
c) Formula of its chloride and sulphate

Answer 1

Explanation:

atomic number and number of protons

Answer 2

Hey mate thank for the question

Hope it helps

(a)Electronic configuration is 2,8,1 (sodium) since the last shell has only 1 electron so it's valency is 1

(b)Since the sum of electronic configuration is 11 so the atomic is also 11 and no of protons is 11 because the sodium loses its valence electron and posses positive charge

(c) Reaction is as follows

(1) Na+Cl=>NaCl

(2)2Na+ SO4=Na2SO4