First slide

Nuclear stability

Question

When a $β^{-}$ -particle is emitted from a nucleus, the neutron-proton ratio:

Moderate

A

is decreased
B

is increased
C

remains the same
D

first (A) and (B)

Solution

When a $β^{-}$ -particle is emitted from a nucleus, no. of proton increases and number of neutron decreases. Hence the neutron-proton ratio is decreased.

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