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Q.

Among the following gaseous elements with atomic numbers, which will have greater rate of effusion?

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a

Z = 8

b

Z = 9

c

Z = 7

d

Z = 10

answer is D.

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Detailed Solution

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element with atomic number 10 is neon its molecular weight = 20

element with atomic number 7 is nitrogen its molecular weight = 28

element with atomic number 8 is fluorine its molecular weight = 32

element with atomic number 9 is fluorine its molecular weight = 38

 

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Among the following gaseous elements with atomic numbers, which will have greater rate of effusion?