Question

Can some one answer this question ASAP​

Answer 1

X is Sulphur

i) Valence electrons  = number of electrons in last shell = 6

   Valency = number of electrons needed to complete octet or duplet (octet in this case) >> 8-6 = 2

ii)when sulphur reacts with hydrogen it forms HYDROGEN SULPHIDE (  $H_{2}S$ )  

iii)X is Sulphur and it is a non-metal