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VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

Arrange in decreasing order, the energy of $2 s$ orbital in the following atoms $\mathrm{H}, \mathrm{Li}, \mathrm{Na}$ and K .

A
$E_{2 s}(\mathrm{H})>E_{2 s}(\mathrm{Li})>E_{2 s}(\mathrm{Na})>E_{2 s}(\mathrm{~K})$
B
$E_{2 s}(\mathrm{H})>E_{2 s}(\mathrm{Na})>E_{2 s}(\mathrm{Li})>E_{2 s}(\mathrm{~K})$
C
$E_{2 s}(\mathrm{H})>E_{2 s}(\mathrm{Na})=E_{2 s}(\mathrm{~K})>E_{2 s}(\mathrm{Li})$
D
$E_{2 s}(\mathrm{~K})>E_{2 s}(\mathrm{Na})>E_{2 s}(\mathrm{Li})>E_{2 s}(\mathrm{H})$
2
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

The number of radial nodes in 3s and 2p respectiely are

A
2 and 0
B
1 and 2
C
0 and 2
D
2 and 1
3
VITEEE 2023
MCQ (Single Correct Answer)
+1
-0

The uncertainty in the momentum of an electron is $$2.0 \times 10^{-8} \mathrm{~kg} \mathrm{~ms}^{-1}$$. The uncertainty in its position will be

A
$$2.63 \times 10^{-27} \mathrm{~m}$$
B
$$2.63 \times 10^{-26} \mathrm{~m}$$
C
$$1.73 \times 10^{-27} \mathrm{~m}$$
D
$$2.57 \times 10^{-28} \mathrm{~m}$$
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

In which of the following photoelectric effect is observed?

A
Mg
B
Ba
C
Ge
D
Cs
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