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Which group of atoms have nearly same at...

Which group of atoms have nearly same atomic radius.

A

`Na, K, Rb, Cs`

B

`Li, Be, B, C`

C

`fe, Co, Mn`

D

`F, CI, Br, I`

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The correct Answer is:
C
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  8. The atomic number of V,Cr, Mn and Fe are respectively 23,24,25 and 26....

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  9. For which of the following species 2^(nd) IE lt 1^(st) IE

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  12. Which one of the following statement is correct?

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  13. For magnitude of eletron gain enthalpy of chalocogens and halogens, wh...

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  15. N(0)//2 atoms of X(g) are converted into X^(+) (g) by energy E(1) . N(...

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  16. The formation of oxide ion O^(2-)(g) from oxygen atom requires first a...

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  17. The prperties which are not common to both groups 1 and 17 elements in...

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  19. Which of the following is most electronegative in p-block elements

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  20. Which set does not show correct matching ?

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