Question

An element Z forms the following compound when it reacts with hydrogen,chlorine,oxygen and phosphorus.

ZH_3, ZCl_3, Z_2O_3 And ZP

(a) What is the valency of elementZ?

(b)Element Zis metal or nonmetal?

Answer 1

a ) valency of z is 3
b ) element is a metal as it combines with electronegative elements that is halogen

Answer 2

(a) The valency of element Z is 3.

(b) Element Z is metal as it is electropositive in nature.

Explanation:

• An element Z forms the following compound when it reacts with hydrogen, chlorine, oxygen, and phosphorus and forms $ZH_{3}, ZCl_{3} , Z_{3}O_{3},ZP$

• These compounds are formed when the element Z  reacts together with non metals In this form, it will have an oxidation number of 3

• The metal Z is an electropositive metal that reacts with the non-metals.

(a) The valency of element Z found in the given compounds is 3.

(b) Z is a metal because it is electropositive and reacting with non-metals