Question

What happens to the atomic number of an element when emits a ${\beta }^{+}$ particle

• A. decrease by $1$
• B. increase by $1$
• C. remains unchanged
• D. becomes $1$

Answer 1

The correct option is A decrease by $1$

In ${\beta }^{+}$ decay, there is loss of 1 proton and an neutrino is emitted from nucleus. So atomic number decreases by 1.

For example:

${}_6^{11}C\to {}_5^{11}B+e^{+}+\nu$