Question

Maximum oxidation state shown by p block elements formula

Answer 1

To find the higher oxidation state of a specific group
the simple trick is
higher oxidation state = group number - 10


For lower oxidation state. =. group number -12

for example,
for boron (group 13) family,
higher oxidation state= 13-10=3
lower oxidation state= 14-13 = 1

I think this trick may helps you.
keep learning !!!