Chemistry_Class-11_Chapter-3_Topic-5_ELECTRONEGATIVITY

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1. Between HF, HCl , HBr and HI, HF has the highest ionic character because

(a) F has the highest electron affinity

(b) In HF, electronegativity difference is highest

(d) Atomic orbitals of H and F have almost similar energy

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2. On Puling scale which of the following does not have electronegativity ≥ 3.0

(a) Oxygen

(b) Nitrogen

(d) Bromine

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3. An atom with high electronegativity has

(a) Large size

(b) High ionization potential

(d) Low ionization potential

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4. The outmost electronic configuration of the most electronegative elements is

(a) ns2 np3

(b) ns2 np4

(d) ns2 np6

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5. Which of the following is second most electronegative element

(a) Chlorine

(b) Oxygen

(d) Fluorine

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6. Which of the following is the most electropositive elements

(a) Aluminium

(b) Magnesium

(d) sulphur

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7. Most electronegative element is

(a) Al

(b) C

(d) Be

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8. The electronegativity of the following elements increases in the order

(a) C , N , Si , P

(b) N , Si ,C , P

(d) P, Si , N , C

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9. Which one of the following has the highest electronegativity

(a) Br

(b) Cl

(d) Si

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10. Arrange F, Cl, O, N in the decreasing order of electronegativity

(a) O > F > N > Cl

(b) F > N > Cl > O

(d) F > O > N > Cl

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11. Which one of the following represents the electronic configuration of the most electropositive element

(a) [He] 2s1

(b) [Xe] 6s1

(d) [Xe] 6s2

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12. The chemical elements are arranged in the order of increasing electronegativities in the sequence

(a) P, Si, Se, Br, N

(b) Si, Se, P, Br, N

(d) Se, P, Si, Br, N

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13. Which of the following is the most electronegative

(a) F

(b) He

(d) Na

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14. Pauling’s equation for determining the electronegativity of an element’s

(a) XA – XB = 0.208√∆

(b) XA + XB = 0.208 √∆

(d) XA – XB = √∆

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15. The property of attracting electrons by the halogen atom in a molecular is called

(a) Ionization potential

(b) Electron affinity

(d) Electronic attraction

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16. The most polar bond is

(a) O – F

(b) N – Cl

(d) N – N

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17. Which is the correct order of electronegativities

(a) F > N C

(b) F > N > O > C

(d) F > N > O < C

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18. In the following, the element with the highest electro positivity is

(a) Copper

(b) Cesium

(d) Chromium

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19. Which of these have no unit

(a) Electronegativity

(b) Electron affinity

(d) Excitation potential

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20. The correct order of decreasing electronegativity values among the elements I- beryllium, II-oxygen, III-nitrogen and IV-magnesium is

(a) (II) > (III) > (I) > (IV)

(b) (III) > (IV) > (II) > (I)

(d) (I) > (II) > (IV) > (III)

(e) (II) > (III) > (IV) > (I)

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21. Increasing order of electronegativity is

(a) Bi < P < S < Cl

(b) P < Bi < S < Cl

(d) Cl < S < Bi < P

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22. In general, the properties that decrease and increase down a group in the periodic table, respectively, are:

(a) Atomic radius and electronegativity

(b) Electronegativity and atomic radius

(d) Electronegativity and electron gain enthalpy

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23. The correct option with respect to the Pauling electronegativity values of the elements is :-

(a) Te > Se

(b) Ga < Ge

(d) P > S

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