1
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate radius of fourth orbit of $\mathrm{B}^{4+}$ ion.

A
169.3 pm
B
211.6 pm
C
380.8 pm
D
413.2 pm
2
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate wave length for emission of a photon having wave number $11516 \mathrm{~cm}^{-1}$.

A
216 nm
B
434 nm
C
868 nm
D
642 nm
3
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is correct regarding isobars?

A
These have same number of neutrons.
B
These are the atoms of different elements.
C
These have same atomic number.
D
These have different mass number.
4
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the energy associated with first orbit of $\mathrm{He}^{+}$?

A
$-2.18 \times 10^{-18} \mathrm{~J}$
B
$-4.36 \times 10^{-18} \mathrm{~J}$
C
$-6.54 \times 10^{-18} \mathrm{~J}$
D
$-8.72 \times 10^{-18} \mathrm{~J}$
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