$_{92}{{\rm{U}}^{235}}$ and $_{92}{{\rm{U}}^{238}}$ differ as

$_{92}{{\rm{U}}^{238}}$ has ${\rm{3}}$ neutrons more

$_{92}{{\rm{U}}^{235}}$ has ${\rm{2}}$ protons less

$_{92}{{\rm{U}}^{238}}$ has ${\rm{3}}$ protons more

NEET UG PHYSICS MCQ: NUCLEI

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_{92}{\mathrm{U}^{235}}

and

_{92}{\mathrm{U}^{238}}

differ as

View answer and explanation

Correct option: C

_{92}{\mathrm{U}^{238}}

has

\mathrm{3}

neutrons more

Option C (

_{92}{\mathrm{U}^{238}}

has

\mathrm{3}

neutrons more) is correct because isotopes of an element have the same number of protons but different numbers of neutrons.

^{238}U

has 3 more neutrons than

^{235}U

(238-92 = 146 vs 235-92 = 143, difference is 3).

Practice All Chapter MCQs →

\mathrm{216}

\mathrm{125}

{ }_{92} X^{236} \rightarrow{ }_{56} Y^{141}+{ }_{36} Z^{92}+3 R

({R})

{R_0}\; = \mathrm{ }1.3fm

\left({ }_0^1 \mathrm{n}\right)

\left({ }_{92}^{235} \mathrm{U}\right)

1\,\,a.m.u = 931\,\,MeV