n element ‘Z’ forms the following compound when it reacts with hydrogen, chlorine,oxygen and phosphorous.ZH3, ZCl3, Z2O3 and ZP(a) What is the valency of element ‘Z’?(b) Element ‘Z’ is metal or non-metal

(a) To determine the valency of element 'Z', we can look at the compounds it forms with hydrogen, chlorine, oxygen, and phosphorous.

In the compound ZH3, the valency of hydrogen is always +1. Since there are three hydrogen atoms, the total valency contributed by hydrogen is +3. Therefore, the valency of element 'Z' in ZH3 is -3.

In the compound ZCl3, the valency of chlorine is always -1. Since there are three chlorine atoms, the total valency contributed by chlorine is -3. Therefore, the valency of element 'Z' in ZCl3 is +3.

In the compound Z2O3, the valency of oxygen is always -2. Since there are three oxygen atoms, the total valency contributed by oxygen is -6. Therefore, the valency of element 'Z' in Z2O3 is +6.

In the compound ZP, the valency of phosphorous is always -3. Therefore, the valency of element 'Z' in ZP is +3.

Based on these compounds, we can see that the valency of element 'Z' can vary depending on the element it is reacting with. It can have a valency of -3, +3, or +6.

(b) To determine whether element 'Z' is a metal or non-metal, we need more information. The properties of element 'Z' and its position in the periodic table can help us determine its classification.