Correct statements for an element with atomic number 9 are
(A). There can be 5 electrons for which ${\mathrm{m}}_{\mathrm{s}}=+\frac{1}{2}$ and 4 electrons for which ${\mathrm{m}}_{\mathrm{s}}=-\frac{1}{2}$
(B). There is only one electron in ${p}_{z}$orbital
(C). The last electron goes to orbital with $\mathrm{n}=2$ and $l=1$
(D). The sum of angular nodes of all the atomic orbitals is 1 .

Choose the correct answer from the options given below:

Question

Correct statements for an element with atomic number 9 are
(A). There can be 5 electrons for which ${\mathrm{m}}_{\mathrm{s}}=+\frac{1}{2}$ and 4 electrons for which ${\mathrm{m}}_{\mathrm{s}}=-\frac{1}{2}$
(B). There is only one electron in ${p}_{z}$orbital
(C). The last electron goes to orbital with $\mathrm{n}=2$ and $l=1$
(D). The sum of angular nodes of all the atomic orbitals is 1 .

Choose the correct answer from the options given below:

YESPYQ · Accepted Answer

Correct answer: b) (A) and (C) only. $\mathrm{F}(\mathrm{Z}=9)\ 1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{5}\ \mathrm{number}\mathrm{of}\mathrm{electrons}\mathrm{with}\mathrm{s}=+1/2,\mathrm{is}5\ \mathrm{number}\mathrm{of}\mathrm{electrons}\mathrm{with}\mathrm{s}=-1/2,\mathrm{is}4\ \mathrm{Sum}\mathrm{of}\mathrm{angular}\mathrm{nodes}\mathrm{of}\mathrm{all}\mathrm{orbitals}=0+0+1+1+1=3\$

Correct statements for an element with atomic number 9 are (A). There can be 5 electrons for which \({\mathrm{m}}_{\math…

Practice more JEE Chemistry PYQs