Kerala Board Solutions for Chapter: Periodic Table and Electronic Configuration, Exercise 2: Extended Activity

When the last electron of an atom was filled in the 3d subshell, the subshell electronic configuration was $3{\mathrm{d}}^8$. Write the complete subshell electronic configuration of this atom.

When the last electron of an atom was filled in the 3d subshell, the subshell electronic configuration was $3{\mathrm{d}}^8$. Write the atomic number of this atom.

When the last electron of an atom was filled in the 3d subshell, the sub-shell electronic configuration was $3{\mathrm{d}}^8$. Write that the atom belongs to which block.

When the last electron of an atom was filled in the 3d subshell, the sub-shell electronic configuration was $3{\mathrm{d}}^8$. Write its period number.

When the last electron of an atom was filled in the 3d sub-shell, the subshell electronic configuration was $3{\mathrm{d}}^8$. Write its group number.

The element $\mathrm{Cu}$ with atomic number $29$ undergoes a chemical reaction to the formation with oxidation number $+2$. Write down the chemical formula of one compound formed when this element reacts with chlorine$\left({}_{17}\mathrm{Cl}\right)$.

Certain subshells of an atom are given below $2\mathrm{s}, 2\mathrm{d}, 3\mathrm{f}, 3\mathrm{d}, 5\mathrm{s}, 3\mathrm{p}$. Which are the subshells that are not possible?

Certain subshells of an atom are given below $2\mathrm{s}, 2\mathrm{d}, 3\mathrm{f}, 3\mathrm{d}, 5\mathrm{s}, 3\mathrm{p}$. Which are the subshells that are not possible. Give the reason.