Periodic Table

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Periodic Table

Test1 Max. Marks = 40

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1. Which of the following atom has smallest size

4 points

(A) He

(B) F

(D) None of these

Clear selection

2. Which of the following has highest metallic character

Element I. P.

(A) 16.2 eV

(B) 1.5 eV

(D) 10.5 eV

4 points

(A)

(B)

(C)

(D)

Clear selection

3. The ionization energy of nitrogen is more than that of oxygen because :

4 points

(A) Of the extra stability of half-filled p-orbitals in nitrogen

(B) Of the smaller size of nitrogen

(D) The former is less electronegative

Clear selection

4. Arrange S, O and Se in ascending order of electron affinity :

4 points

(A) Se < S < O

(B) Se < O < S

(D) S < Se < O

Clear selection

5. Elements of which group form anions most readily ?

4 points

(A) Oxygen family

(B) Nitrogen group

(D) Alkali metals

Clear selection

6. Which of the following is weakest basic oxides

4 points

(A) Fe₂O₃

(B) FeO

(D) Na₂O

Clear selection

7. Which of the following has highest ionization energy

4 points

(A) Argon

(B) Barium

(D) Oxygen

Clear selection

8. The screening effect of d-electrons is -

4 points

(A) Much less than s-electrons

(B) Much more than s-electrons

(D) Equal to p-electrons

Clear selection

9. Atomic radii of fluorine and neon in Angstrom units are respectively given by-

4 points

(A) 0.72, 1.60

(B) 1.60, 1.60

(D) none of these

Clear selection

10.The increasing order of electronegativity in the following elements-

4 points

(A) C, N, Si, P

(B) N, Si, C, P

(D) P, Si, N, C

Clear selection

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