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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 |

Level 3: 35%-60%

NEET - 2025

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Please attempt this question first.

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Please attempt this question first.

Q2:

Which of the following arrangements is correct for increasing order of electronegativity?

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%

Level 2: 60%+

NEET - 2024

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Q3:

Which one of the following arrangements does not give the correct picture of the trends indicated against it?
1. F₂> Cl₂> Br₂> I₂ : Oxidising power
2. F<Cl>Br>I : Electron gain enthalpy
3. F₂> Cl₂> Br₂> I₂ : Bond dissociation energy
4. F> Cl > Br > I : Electronegativity

Subtopic: Ionization Energy (IE) | Electronegativity | Electron Affinity (EA) |

67%

Level 2: 60%+

AIPMT - 2008

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Q4:

Which one of the following orders is not in accordance with the property stated against?

1. $F_{2} > C l_{2} > B r_{2} > I_{2}$ $:$ $O x i d i \sin g$ $p o w e r$

2. $H l > H B r > H C l > H F$ $:$ $A c i d i c$ $p r o p e r t y$ $i n$ $w a t e r$

3. $F_{2} > C l_{2} > B r_{2} > I_{2}$ $:$ $E l e c t r o n e g a t i v i t y$

4. $F_{2} > C l_{2} > B r_{2} > I_{2}$ $:$ $B o n d$ $d i s s o c i a t i o n$ $e n e r g y$

Subtopic: Ionization Energy (IE) | Electronegativity |

76%

Level 2: 60%+

AIPMT - 2006

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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.

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