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:
1. C and D only
2. A, C and E only
3. A, B and E only
4. C and E only
Subtopic:  Ionization Energy (IE) | Electronegativity |
From NCERT
NEET - 2025
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Arrange the following elements in increasing order of electronegativity N, O, F, C, Si.
Choose the correct answer from the options given below:
1. Si < C < O < N < F 2. O < F < N < C < Si
3. F < O < N < C < Si 4. Si < C < N < O < F
Subtopic:  Electronegativity |
 78%
From NCERT
NEET - 2024
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital