Pd has exceptional electronic configuration of 4d¹⁰ 5s⁰ It belongs to period ______ and group _____

(a)

4, 11

(b)

5, 10

(c)

6, 9

(d)

3, 16

The elements at the extreme left of periodic table has strong behaviour ______

(a)

Oxidizing

(b)

Reducing

(c)

both oxidisation and reducing

(d)

electro negative

On moving diagonally across the periodic table, the second and third period elements show certain similarities. Pick out the pair which shows such a property.

(a)

Be & Na

(b)

Be & AI

(c)

Be & Mg

(d)

B & AI

d-block elements form ____ compounds.

(a)

ionic

(b)

covalent

(c)

Coordinate

(d)

both (a) and (b)

X, Y and Z are three members of a Doboreiner's triad. If the atomic mass of X is 7 and that of Z is 39, what in the atomic mass of Y?

(a)

23

(b)

7

(c)

46

(d)

39