1
JEE Main 2022 (Online) 27th July Morning Shift
+4
-1

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Energy of $$2 \mathrm{s}$$ orbital of hydrogen atom is greater than that of $$2 \mathrm{s}$$ orbital of lithium.

Reason R: Energies of the orbitals in the same subshell decrease with increase in the atomic number.

In the light of the above statements, choose the correct answer from the options given below.

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is NOT the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
2
JEE Main 2022 (Online) 25th July Morning Shift
+4
-1

Which of the following sets of quantum numbers is not allowed?

A
$$\mathrm{n}=3,1=2, \mathrm{~m}_{\mathrm{l}}=0, \mathrm{~s}=+\frac{1}{2}$$
B
$$\mathrm{n}=3, \mathrm{l}=2, \mathrm{~m}_{\mathrm{l}}=-2, \mathrm{~s}=+\frac{1}{2}$$
C
$$\mathrm{n}=3, \mathrm{l}=3, \mathrm{~m}_{\mathrm{l}}=-3, \mathrm{~s}=-\frac{1}{2}$$
D
$$\mathrm{n}=3, \mathrm{l}=0, \mathrm{~m}_{1}=0, \mathrm{~s}=-\frac{1}{2}$$
3
JEE Main 2022 (Online) 30th June Morning Shift
+4
-1

The number of radial nodes and total number of nodes in 4p orbital respectively are :

A
2 and 3
B
2 and 2
C
3 and 4
D
4 and 4
4
JEE Main 2022 (Online) 29th June Evening Shift
+4
-1

Which of the following is the correct plot for the probability density $${\psi ^2}$$ (r) as a function of distance 'r' of the electron from the nucleus for 2s orbital?

A
B
C
D
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