Give the correct order of initials `T` (true) or `F` (false) for following statements :-
(I) If an ion has `2` electrons in `K` shell, `8` electrons in `I`. Shell and `6` electrons in `M` shell, then number of `S` electrons present in that element is `6`.
(II) The maximum number of electrons in a subshell is given by `2n^(2)`
(III) If electron has magnetic quantum number `-1`, then it cannot be present in s-orbital.
(IV) Only one radial node is present in `3p` orbital.

Options

A. `"TTFF"`
B. `"FFTF"`
C. `TFTT`
D. `FFTF`

Answer

C

Explanation

`(1)/(lambda)=R_(H)[(1)/(n_(1)^(2))-(1)/(n_(2)^(2))]`
for shortest wave length `n_(2) = oo, n_(1) = 2`
`(1)/(lambda)=R_(H^(ƶ^(2)))[(1)/(4)-(1)/(oo)]" "lambda=(4)/(4R_(H))=(1)/(R_(H))=x`
`(1)/(lambda)=R_(H^(ƶ^(2)))[(1)/(9)-(1)/(16)]" "(1)/(lambda)=R_(h^(X^(2)))[(7)/(9xx16)]`
`lambda=(9xx16)/(9xx7)xx(1)/(R_(H))implies lambda=(16)/(7)x`