NEET-XII-Physics
neet 2020 questions with solutions year:2020
- #23When a uranium isotope `` ^{235}_92 U `` is bombarded with a neutron, it generates `` ^{89}_{36} Kr `` , three neutrons and :
(A) `` ^{144}_{56} Ba ``
(B) `` ^{91}_{40} Zr ``
(C) `` ^{101}_{36} Kr ``
(D) `` ^{103}_{36} Kr ``
digAnsr: AAns : `` ^{235}_{92}U + ^{1}_{0}n \rightarrow ^{89}_{36}Kr+3 ^{1}_{0}n+X_{X}^{A} ``
`` 92+0=36+Z ``
`` \Rightarrow Z=56 ``
`` 235+1=89+3+A ``
`` \Rightarrow A=144 ``
So, `` ^{144}_{56}Ba `` is generated