Which group has zero valency-I AIII AVIII AVII A

Question

Toppr Admin · Accepted Answer

Elements in group VIII-A -He- Ne- Ar- Kr- Xe- and Rn- are called noble-xA0-gases or rare gases-xA0-Among noble gases- all have complete octet except He -duplet- so they show zero valencies-

Which group has zero valency?
I A
III A
VIII A
VII A

Elements in group VIII-A (He, Ne, Ar, Kr, Xe, and Rn) are called noble gases or rare gases. Among noble gases, all have complete octet except He (duplet) so they show zero valencies.

Which group has zero valency?I AIII AVIII AVII A

Elements in group VIII-A (He, Ne, Ar, Kr, Xe, and Rn) are called noble gases or rare gases. Among noble gases, all have complete octet except He (duplet) so they show zero valencies.

Which group has zero valency?
I A
III A
VIII A
VII A