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. 

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)$P{Q}_2$

An electronic configuration representing an atom in the excited state is: 

$1.$ $1{\mathrm{s}}^2,2{\mathrm{s}}^{2}2{\mathrm{p}}^1$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$
$2.$ $1{\mathrm{s}}^2,2{\mathrm{s}}^{2}2{\mathrm{p}}^2$
$3.$ $1{\mathrm{s}}^2,2{\mathrm{s}}^{2}2{\mathrm{p}}^2,3{\mathrm{s}}^1$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$
$4.$ $1{\mathrm{s}}^2,2{\mathrm{s}}^{2}2{\mathrm{p}}^5$

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 correct order of atomic/ionic radii is:

(1) $Sc>Ti>V>Cr<mspace\; width="1em"></mspace>$                               

(2) $Co>Ni>Cu>Zn$                                      

(3) $S^{2-}>C{l}^{-}>O^2>N^{3-}$                         

(4) None of these

Which of the following transformation least energy is required?

(1) ${F^{-}}_{\left(g\right)<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>}\to F_{\left(g\right)}<mspace\; width="1em"></mspace>+e^{-}$                 

(2) ${P^{-}}_{\left(g\right)}\to P_{\left(g\right)}+e^{-}$

(3) ${S^{-}}_{\left(g\right)}\to S_{\left(g\right)}+e^{-}$                   

(4) $C{l^{-}}_{\left(g\right)}\to C{l}_{\left(g\right)}+e^{-}$

Which of the following represents correct order of electron affinity?

(1) Cl>F>S>O                           

(2) F>O>S>Cl

(3) F>Cl>S>O                           

(4) Cl>S>O>F

Correct expression of "Allred and Rochow's" scale is:

(a) Electronegativity =$0.744\frac{Z_{eff.}}{r^2}+0.359$

(b) Electronegativity =$0.359\frac{r^2}{Z_{eff.}}+0.744$

(c) Electronegativity =$0.359\frac{Z_{eff.}}{r}+0.744$

(d) Electronegativity =$0.359\frac{Z_{eff.}}{r^2}+0.744$

The process that requires absorption of energy is:

1. $N\to N^{-}$                       

2. $F\to F^{-}$

3. $Cl\to C{l}^{-}$                     

4. $H\to H^{-}$

Consider the following four elements, which are represented according to long form of periodic table.

Here W, Y and Z are left, up and right elements with respect to the element 'X' and 'X' belongs to 16th group and 3rd period. Then according to given information the incorrect statement regarding given elements is:

1. Maximum electronegativity :Y             

2. Maximum catenation property :X

3. Maximum electron affinity :Z               

4. Y exhibits variable covalency