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Three elements X , Y and Z have atomic n...

Three elements X , Y and Z have atomic numbers 19 , 37 and 55 respectively . Then the correct statements (s) is / are

A

Their ionisation potential would increase with the increasing atomic number

B

Y would have an ionisation potential in between those of X and Z

C

Z would have the highest ionisation potential

D

Y would have the highest ionisation potential

Text Solution

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The correct Answer is:
B
`X rarr K, Y rarr Rb, Z rarr Cs`
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GRB PUBLICATION-PERIODIC TABLE-C.Ionisation Energy
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  3. Of the elements given, which has the lowest ionization energy?

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