Question

an element m is in the third group of periodic table write the formulae of chloride and oxide​

Answer 1

Answer:

Explanation:

as the element belongs to 13th group so it will have 3 electrons in its outermost shell. it needs 5 more electrons to complete its octet and so it requires a lot of energy to gain electrons so it will loose 3 electrons.

chlorine has electronic configuration as 2,8,7. it needs to gain 1 electron.

now let the element be X

formula therefore becomes,

X Cl

3 ↗↖ 1

XCl3

formula of oxides=

X O

3 ↗↖ 2

X2O3