Question

If an element with atomic number (Z) = "A" is an inert gas; in which group would you find an element with atomic number
"A-1"(A minus One)

help me please guys
correct answer = brainliest mark will be given


wrong answer = reported
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Answer 1

Answer:

If the element say Argon(ar) then minus 1 atomic no. Then it becomes lithium (li)... So the group from which A-1 belongs is group IA