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Taking the Bohr radius a(0) = 53 pm, the...

Taking the Bohr radius `a_(0) = 53` pm, the radius of `Li^(++)` ion in its gnround state, on the basis of Bohr's model, will be about.

A

53pm

B

27pm

C

18pm

D

13pm

Text Solution

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The correct Answer is:
C
According to Bohr.s model of an atom, radius of an atom in its ground state is `r= (r_(0))/(Z)` where, `r_(0)` is Bohr.s radius and Z is atomic number. As given that, `r_(0)=53`pm and atomic number of Lithium atom is 3 So, `r= (53)/(3)= 17.67`pm = 18pm
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