Embibe Experts Solutions for Exercise 3: Assignment

Which of the following set of atomic number represents only representative elements?

Which of the following equation represents first enthalpy of ionization?

The energy required to convert all atoms present in $1.2 \mathrm{g}$ magnesium to ${\mathrm{Mg}}^{2+}$ ions if $\mathrm{IE},$ and ${\mathrm{IE}}_2$ of magnesium are $120 \mathrm{kJ}{ \mathrm{mol}}^{-1}$ and $240 \mathrm{kJ}{ \mathrm{mol}}^{-1}$ respectively

The process requiring absorption of energy is

The least electronegative element has the following electronic configuration

Which of the following is correct order of metallic character for $\mathrm{Si}, \mathrm{Be}, \mathrm{Mg}, \mathrm{Na}$ and $\mathrm{P}?$

The electronic configuration having maximum difference in first and second ionization energies is

The electronic configurations of the elements $\mathrm{X}, \mathrm{Y}, \mathrm{Z}$ and $\mathrm{J}$ are given below. Which element has the highest metallic character?