The period number in the long form of the periodic table is equal to : 

The elements in which electrons are progressively filled in 4f-orbitals are called:

The outermost electronic configuration of the last element of the p-block in the 6th period is represented by:

1. $7{\mathrm{s}}^{2}7{\mathrm{p}}^6$

2. $5{\mathrm{f}}^{14}6{\mathrm{d}}^{10}7{\mathrm{s}}^{2}7{\mathrm{p}}^0$

3. $4{\mathrm{f}}^{14}5{\mathrm{d}}^{10}6{\mathrm{s}}^{2}6{\mathrm{p}}^6$

4. $4{\mathrm{f}}^{14}5{\mathrm{d}}^{10}6{\mathrm{s}}^{2}6{\mathrm{p}}^4$

The elements with atomic numbers 35, 53, and 85 are:

Among the following, the elements that can show covalency greater than 4 is/are:

(a) Be

(b) P 

(c) S

(d) B

Choose the correct option

1. (a), (d)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Among the following sequences, the sequence contains atomic numbers of only representative elements is/are:

Choose the correct option:
1. (a), (d)
2. (b), (c)
3. (c), (d)
4. (b), (d)

The properties among the following can be shown by the element belonging
to the 3rd period and group 13 of the periodic table:

(a) Good conductor of electricity

(b) Liquid, metallic

(c) Solid, metallic

(d) Solid, non-metallic

Choose the correct option :

1. (a), (c)

2. (b), (c)

3. (c), (d)

4. (b), (d)