(b). Elements A,B,C and D have Atomic Numbers 6,10,11 and 17 respectively.
State:
A). To which group A,B,C and D belong
(B). To which period A,B,C and D belong?
(C). Which amongst A,B,C and D is ?
(1) Alkali metal
(2) Noble gas
(3) Member of Halogen family
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Answer:
a.to which group ABC and D belong
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