Question

A radioactive nucleus emits a beta particle, then the parent and daughter nuclei are _________.

A) Isotones
B) Isotopes
C) Isomers
D) Isobars​

Answer 1

D) Isobars

Step-by-step explanation:

D) Isobars

When a radioactive nucleus emits a beta particle, it undergoes beta decay, which results in the transformation of the parent nucleus into a daughter nucleus. Isobars are atoms of different elements that have the same mass number (total number of protons and neutrons) but different atomic numbers (number of protons). In beta decay, the parent and daughter nuclei have the same mass number but different atomic numbers, making them isobars.

Answer 2

D) Isobars

Step-by-step explanation:

Isobars are atoms with the same mass number but different atomic numbers. When a radioactive nucleus emits a beta particle, it loses an electron, which has a negligible mass. Therefore, the mass number of the parent and daughter nuclei will be the same.

However, the atomic number of the daughter nucleus will be one greater than that of the parent nucleus, because the electron that was emitted was a product of a neutron decaying into a proton.

So the answer is (D).

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