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1
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Arrange the energy of $2 s$ orbitals in increasing order for the atoms $\mathrm{C}, \mathrm{B}, \mathrm{N}$ and O .

A

$E_{2 s}(\mathrm{O}) < E_{2 s}(\mathrm{~N}) < E_{2 s}(\mathrm{C}) < E_{2 s}(\mathrm{~B})$

B

$E_{2 s}(\mathrm{~B}) < E_{2 s}(\mathrm{C}) < E_{2 s}(\mathrm{~N}) < E_{2 s}(\mathrm{O})$

C

$E_{2 s}(\mathrm{~N})< E_{2 s}(\mathrm{O})< E_{2 s}(\mathrm{~B})< E_{2 s}(\mathrm{C})$

D

$E_{2 s}(\mathrm{C})< E_{2 s}(\mathrm{~B})< E_{2 s}(\mathrm{O})< E_{2 s}(\mathrm{~N})$

2
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

The number of radial nodes in $4 s$ and $3 p$ orbitals respectively is

A

2 and 0

B

3 and 1

C

1 and 0

D

2 and 1

3
VITEEE 2024
MCQ (Single Correct Answer)
+4
-1

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
$E_{2 s}(\mathrm{~K})>E_{2 s}(\mathrm{Na})>E_{2 s}(\mathrm{Li})>E_{2 s}(\mathrm{H})$
4
VITEEE 2024
MCQ (Single Correct Answer)
+4
-1

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
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