Question

An element is represented as8X16. 3M(a) Write its electronic configuration.(b) How many valence electrons it has?What is its valency?(c)Will it form a cation or anion ? Represent the symbol of its ion.

Answer 1

Answer:

a) 1s2 2s2 2p4

b) It has 4 valence electrons

c) It forms anion because it is easy the element to gain 2 electrons easily than to lose 4 electrons to become an anion.

Its symbol O^-2