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Periodic Table and Periodicity question

2025 · Q106
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Periodic Table and Periodicity question

2025 · Q106

NEETChemistryPeriodic Table and PeriodicityMCQ+4 / −1

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−,Ca2+\mathrm{Ar}, \mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}Ar,K+,Cl−,Ca2+, and S2−\mathrm{S}^{2-}S2− are all isoelectronic species.

D. The correct order of the first ionization enthalpies of Na,Mg,Al\mathrm{Na}, \mathrm{Mg}, \mathrm{Al}Na,Mg,Al, and Si is Si>Al>Mg>Na\mathrm{Si}>\mathrm{Al}>\mathrm{Mg}>\mathrm{Na}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 :

  1. A
    C and D only
  2. B
    A, C, and E only
  3. C
    A, B, and E only
  4. D
    C and E only
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