1
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The energy of third orbit of $\mathrm{Li}^{2+}$ ion (in J ) is
A
$-2.18 \times 10^{-18}$
B
$-6.54 \times 10^{-18}$
C
$-7.3 \times 10^{-19}$
D
$+2.18 \times 10^{-18}$
2
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)
3
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
$m \sqrt{\frac{h}{\pi}}$
4
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 3 English

A
$1 s$-orbital
B
$2 s$-prbital
C
3 s-orbital
D
$4 s$-orbital
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