A) \[_{92}{{U}^{235}}\]
B) \[_{8}{{O}^{16}}\]
C) \[_{2}H{{e}^{4}}\]
D) \[_{26}F{{e}^{56}}\]
Correct Answer: A
Solution :
Number of neutrons \[= Mass number - Atomic number\] The representation \[_{92}{{U}^{235}}\] shows 235 is mass number and 92 is atomic number. Hence, number of neutrons \[=235-92=143\] \[_{8}{{O}^{16}}\] has 16 as mass number and 8 as atomic number. Number of neutrons =16-8=8 \[_{2}H{{e}^{4}}\] has 4 as mass number and 2 as atomic number. Number of neutrons \[=4-2=2\] \[_{26}F{{e}^{56}}\] has 56 as mass number and 26 as atomic number. Number of neutrons \[= 56 - 26 = 30\] Hence, \[_{92}{{U}^{235}}\] has highest neutrons ratio.
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