If $W$ is the atomic weight and $N$ is the atomic number of an element,then:

List the isotopes of hydrogen,carbon,and chlorine,and specify the number of protons,electrons,and neutrons for each.

Number of neutrons in ${}^{12}C$ is

Isotopes of the same element have the same number of

Which one of the following groupings represents a collection of isoelectronic species?

In the neutral state,the element $M$ consists of the isotopes $_{14}M^{28}$,$_{14}M^{29}$,and $_{14}M^{30}$ in the ratio $60 : 30 : 20$ respectively. Correct statements about $M$ in the natural state include that: