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Q.

The element with Z=117 and Z=120 belong to ____,______family respectively

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a

Halogen family and alkaline earth metals

b

Nitrogen family and alkali metals

c

Halogen family and alkali metals

d

Chalcogens family and alkali metals

answer is A.

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Detailed Solution

Hint -I For the element with Z=104 to Z=118 the last two digits indicate group numberHint - II For the element Z=104 to Z = 118, subtract "82" to get the element belonging to the same groupApplying Hint- I:- Z = 117The last two digits are "17" .So it belongs to halogen family, 17th groupSo Z = 118 belongs to 18th  group then 119th element belong 1st  group and 120th  element belong to 2nd  group (alkaline earth metal)
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The element with Z=117 and Z=120 belong to ____,______family respectively