Question

elements x,yand z have 4,5,and 7 valance electons respectively .write molecular formula of the compounds formed by these elements individually with hydrogen ​

Answer 1

for x valency is 4 therefore mol. formula

=XH4(like CH4)

for y valency is 3 therefore mol. formula

=YH3(like BH3)

for z valency is 1 therefore mol. formula

=XH(like HCl)