Question

When a radioactive isotope releases a beta particle the atomic number of the new element is

Answer 1

beta decay is conversion of one neutron into one electrons and proton a,d electron will be emitted in the form energy and excess proton in the mother nucleus will increase the atomic number of element by 1

Answer 2

Answer: The atomic number of the new element increases by 1 unit.

Explanation:  

Beta-decay: In this process, a neutron gets converted into a proton and an electron releasing a beta-particle. The beta particle released is basically a electron with -1 charge and no mass.

$_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta$

General representation of an element is given as: $_Z^A\textrm{X}$

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element