Question

A nuclear reaction of \( ^{235}_{92}U \) with a neutron produces \( ^{90}_{37}Kr \) and two neutrons. Other element produced in this reaction is

• A. \( ^{137}_{56}Ba \)
• B. \( ^{144}_{55}Cs \)
• C. \( ^{56}_{27}Co \)
• D. \( ^{132}_{54}Xe \)

Hint:

In nuclear fission, uranium-235 splits into lighter elements like krypton and barium.

Answer 1

The Correct Option is A

Step 1: Understanding the fission reaction.
In the fission of uranium-235, it splits into two products: krypton and barium. The correct complementary fission product is barium-137.

Step 2: Conclusion.
Thus, the correct answer is option (A).

Final Answer: \[ \boxed{\text{(A) } ^{137}_{56}Ba} \]