Question

please answer AIPMT-2006
Which of the following pairs constitutes
(1) HNO2 & NaNO, (2) NaOH & NaCl
(3) HNO3 & NHQNOZ (4) HCl & KCI
The following pairs .a buffer :-​

Answer 1

So the beta particle that is emitted is a small part of the neutron. And the remaining part of the neutron is now a proton and is held in the nucleus. Since the atomic number depends only on the number of protons in the nucleus it increases. ... The atomic number increases from 1 to 2 but the mass number remains the same.