91Ó°ÊÓ

We need to find out which atom or an ion the given species is.

Ions are electrically charged particles that originate when atoms lose or receive electrons in order to form a stable electron configuration.

In an atom, number of protons is same as number of electrons.

Given species have $3$protons which means it's atomic number is $3$. But it have $1$less electron. Therefore, it is a Lithium $\left({\mathrm{Li}}^{+}\right)$ion.

We need to find out which atom or an ion the given species is.

Ions are electrically charged particles that originate when atoms lose or receive electrons in order to form a stable electron configuration.

In an atom, number of protons is same as number of electrons.

Given species have $1$proton which means it's atomic number is $1$. But it have $0$electron. Therefore, it is a Hydrogen $\left({\mathrm{H}}^{+}\right)$ion.

We need to find out which atom or an ion the given species is.

Ions are electrically charged particles that originate when atoms lose or receive electrons in order to form a stable electron configuration.

In an atom, number of protons is same as number of electrons.

Given species have $3$protons which means it's atomic number is $3$and it have $3$electrons also. Therefore, it is a Lithium $\left(\mathrm{Li}\right)$atom.

We need to find out which atom or an ion the given species is.

Ions are electrically charged particles that originate when atoms lose or receive electrons in order to form a stable electron configuration.

In an atom, number of protons is same as number of electrons.

Given species have $7$protons which means it's atomic number is $7$. But it have $3$more electrons. Therefore, it is a Nitrogen $\left({\mathrm{N}}^{3-}\right)$ion.