Question bank/NEET UG/Chemistry

Which of the following statements are true?
A. Unlike Ga that has a very high melting point, Cs has a very low melting point.
B. On Pauling scale, the electronegativity values of N and Cl are not the same.
C. Ar, K$^+$, Cl$^-$, Ca$^{2+}$, and S$^{2-}$ are all isoelectronic species.
D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si > Al > Mg > Na.
E. The atomic radius of Cs is greater than that of Li and Rb.
Choose the correct answer from the options given below :

Source: geekyrakshit/indian-exam-questions / neet2025-code45