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information :
(a) prinicipal qunatum no n is defined as 1,2,3,………..
(b) Azimuthal quantum no .l hdefind as 1 to n +2 in integral steps .
(c ) magntic quantum no m is defind as `-(1)/(2) "to " +(1)/(2) ` (including zero oif any , in in intergral steps).
(d) spin quntum no s has six possible values `(-2,-1,-(1)/(2),+(1)/(2),+1,+2)`.
(e ) the subshell corresponding to l=1,2,3,4,5............... designeted as F,GltH,I,J,K.... respectively ,
(f) the values of m for given values of l give the number of orbitals in a sub-shell .
(g) the prionciple for filling of `E^(-)` in the shells remins unchanged .
for the elelment having atomic no 43 last `e^(-)` emters in:
A. 1G
B. 2G
C. 2F
D. 1H

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1 Answer

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Correct Answer - d
`1F,1G ,2F ,1H `
12 + 18 +12=42

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