The period number and group number of "Tantalum" (Z=73) are respectively :

1.	5, 7	2.	6, 13
3.	6, 5	4.	None of the above.

Consider the following electronic configuration of an element (P) :

$\left[\mathrm{Xe}\right]4{\mathrm{f}}^{14}5{\mathrm{d}}^{1}6{\mathrm{s}}^2$

The correct statement about element 'P' is :

1. It belongs to the 6th period and the 1st group.

2. It belongs to the 6th period and the 2nd group.

3. It belongs to the 6th period and the 3rd group.

4. None of the above.

Which of the following metal is highest electropositive (metallic) in nature ?

(1) Be                                       

(2) Rb

(3) Mn                                       

(4) Tl

The graph that represents the relationship between atomic number (Z) and magnetic moment of d-block elements among the following is-

[Outer electronic configuration : $(n-1)d^{x}n{s}^{1<mspace\; width="1em"></mspace>or<mspace\; width="1em"></mspace>2}]$

1.

2. 

3. 

4. 

Which of the following statements is correct regarding the element Unununium?

1. It is an inner transition element.

2. It belongs to the 8th period in the periodic table.

3. It is a transition element.

4. It is a non-transition element.

Consider the following periodic properties:

(i) Atomic radius (ii) Electronegativity (iii) Ionisation energy (iv) Metallic character

Which of these properties decrease from left to right across a period and increase from top to bottom down a group?

Consider the following information about element P and Q :

                        Period number            Group number

P                               2                                 15

Q                               3                                 2

Then formula of the compound formed by P and Q element is :

(1) PQ         

(2) $P_3{Q}_2$           

(3)$Q_3{P}_2$            

(4)$P{Q}_2$

The incorrect order of radius is :

\(1.~~\mathrm{Sr}^{2+}<{\mathrm{Rb}}^{+}<{\mathrm{Br}}^{-}<\mathrm{Se}^{2-}\)
2. \( \mathrm{Nb}^{5+}<\mathrm{Zr}^{4+}<\mathrm{Y}^{3+}\)
3. \(\mathrm{Co}>\mathrm{Co}^{2+}>\mathrm{Co}^{3+}>\mathrm{Co}^{4+}\)
4. \(\mathrm{Ba}^{2+}>\mathrm{Cs}^{+}<\mathrm{Se}^{2-}<\mathrm{As}^{3-} \)

The radius of which ion is closest to that of $L{i}^{+}$ ion ?

1. $N{a}^{+}$                                       

2. $B{e}^{2+}$

3. $M{g}^{2+}$                                       

4. $A{l}^{3+}$

The correct order of ${\mathrm{IE}}_2$ is:

(1) Ne>F>O>N                     

(2) O>F>Ne>N

(3) Ne>O>F>N                     

(4) O>Ne>F>N