Is the following nuclear equation balanced?
23? np →he+ 233 am
o yes
o no

No. Equation is not balanced and also incorrect because non of the Np isotopes undergoes such type of radioactive decay in which it produces isotopes of Am.

Explanation:

The correct and balanced nuclear equation is given below.

²³⁷₉₃Np   →  ⁴₂He + ²³³₉₁Pa

The balanced nuclear equation is given above. Np²³⁷ undergoes alpha decay and produce alpha particle and protactinium.

Properties of alpha radiation:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number 4 less than and atomic number 2 less than the starting atom.

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

²³⁸₉₂U   →   ²³⁴₉₀Th  + ₂⁴He  + energy

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answer: they produce more slow than unicellular organisms.