Write the electron configuration of the following ions by using spdf notation: (a) Cr2 , Cr3 , Cr6 ; (b) Mo3 , Mo4 , Mo6 ; (c) Se4 , Se6 , Se2-.

i'm assuming that it's c.) red bank..

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

the volume increases

a