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1
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is wavenumber of a radiation having wavelength $0.25 \mu \mathrm{~m}$ ?

A
$2.5 \times 10^6 \mathrm{~m}^{-1}$
B
$4.0 \times 10^6 \mathrm{~m}^{-1}$
C
$6.5 \times 10^6 \mathrm{~m}^{-1}$
D
$8.0 \times 10^6 \mathrm{~m}^{-1}$
2
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following species contain 20 electrons?

A
$\mathrm{K}^{+}$
B
Ca
C
Mg
D
Cl
3
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the radius of first orbit of He$^+$.

A
24.45 pm
B
13.23 pm
C
48.62 pm
D
39.46 pm
4
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the designation of an orbital with quantum numbers $\mathrm{n}=4$ and $l=3$?

A
4s
B
4p
C
4d
D
4f
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