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If Z("eff")  of F (Z=9)  is X and Z("eff...

If `Z_("eff")`  of `F (Z=9)`  is X and `Z_("eff")` of `Li (Z = 3)` is Y then find the value of `|X-Y|` 

A

`4.90`

B

`3.90`

C

`2.90`

D

`1.90`

Text Solution

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The correct Answer is:
B
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