1
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The number of $d$ electrons in Fe is equal to which of the following?

(i) Total number of ' $s$ ' electrons of Mg .

(ii) Total number of ' $p$ ' electrons of Cl .

(iii) Total number of ' $p$ ' electrons of Ne .

The correct option is

A
(i), (ii) only
B
(ii), (iii) only
C
(i), (iii) only
D
(i), (ii), (iii)
2
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If uncertainty in position and momentum of an electron are equal, then uncertainty in its velocity is
A
$\frac{1}{2 m} \sqrt{\frac{h}{\pi}}$
B
$\frac{1}{m} \sqrt{\frac{h}{\pi}}$
C
$\sqrt{\frac{h}{\pi}}$
D
$m \sqrt{\frac{h}{\pi}}$
3
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The graph between variation of probability density. $\psi^2(r)$ and distance of the electron from the nucleus, $r$ is shown below. This represents

AP EAPCET 2024 - 20th May Evening Shift Chemistry - Atomic Structure Question 11 English

A
$1 s$-orbital
B
$2 s$-prbital
C
3 s-orbital
D
$4 s$-orbital
4
AP EAPCET 2024 - 20th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The angular momentum of an electron in a stationary state of $\mathrm{Li}^{2+}(Z=3)$ is $3 h / \pi$. The radius and energy of that stationary state are respectively
A
$3.174 \ $$\mathop A\limits^ \circ $$,-5.45 \times 10^{-19} \mathrm{~J}$
B
$6.348 \ $$\mathop A\limits^ \circ $$,-5.45 \times 10^{-19} \mathrm{~J}$
C
$6.348 \ $$\mathop A\limits^ \circ $$,+5.45 \times 10^{-18} \mathrm{~J}$
D
$2.116 \ $$\mathop A\limits^ \circ $$,-5.45 \times 10^{-19} \mathrm{~J}$
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