1. Arrange the following elements in increasing order of electronegativity:
N, O, F, C, Si
Choose the correct answer from the options given below

(1).O < F < N < C < Si

(2). F < O < N < C < Si

(3). Si < C < N < O < F

(4). Si < C < O < N < F

2. Match List I with List Il

Choose the correct answer from the options given below :

(1).A-III, B-II, C-I, D-IV

(2). A-III, B-IV, C-II, D-I

(3). A-III, B-IV, C-I, D-II

(4). A-III, B-II, C-IV, D-I

3. Which of the following statements are true?A. Unlike \(G_a\) that has a very high melting point, \(G_s\) has a very low melting point.
B. On Pauling scale, the electronegativity values of N and Cl are not the same.
C. Ar, K⁺, C^-, Ca²⁺, and S^2- are allisoelectronic 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).A, C, and E only

(2). A, B, and E only

(3). C and E only

(4). C and D only

4. Given below are two statements :
Statement I : Like nitrogen that can form ammonia, arsenic can form arsine.
Statement II : Antimony cannot form antimony pentoxide.
In the light of the above statements, choose the most appropriate answer from the options given below:

(1).Statement I is incorrect but Statement II is correct

(2). Both Statement I and Statement II are correct

(3). Both Statement I and Statement II are incorrect

(4). Statement I is correct but Statement II is incorrect

5. Match List - I with List - II

Choose the correct answer from the options given below :

(1).A-IV, B-II, C-I, D-III

(2). A-II, B-I, C-IV, D-III

(3). A-ll, B-I, C-III, D-IV

(4). A-IV, B-II, C-III, D-I

6. Which among the following electronic configurations belong to main group elements?
A. [Ne]3s¹
B. [Ar]3d³ 4s²C. [Kr]4d¹⁰ 5s² 5p⁵
D. [Ar]3d¹⁰4s¹
E. [Rn]5f⁰ 6d²7s²
Choose the correct answer from the option given below :

(1).A, C and D only

(2). B and E only

(3). A and C only

(4). D and E only