Trend in Electronegativity

Q. The cause of diagonal relationship is:

1. Similar electronegativities.
2. Similar ionic or atomic radii.
3. Similar polarizing power of ions.
4. All the three.

Q. Correct order of electronegativity for the given elements is:

1. $Na<Mg<Br<F$
2. $Na<Mg<Br<F$
3. $Na<Mg<Br<F$
4. $Na<Mg<Br<F$

Q. Which of the following is correct for the decreasing order of electronegativity?

1. Na > H > Li > He
2. H > Na > Li > He
3. He > Li > H > Na
4. H > Li > Na > He

Q. Which of the following oxides is amphoteric?

1. $MgO$
2. $P_2{O}_5$
3. $S{O}_3$
4. $A{l}_2{O}_3$

Q. Property of the alkaline earth metals that increases with their atomic number is:

1. Ionisation energy
2. Solubility of their hydroxides in water
3. Solubility of their sulphates in water
4. Electronegativity

Q.

Is an ionized particle charged or uncharged?

Q.

An atom with high electron affinity generally has

1. Tendency to form positive ions

2. High ionisation energy

3. Large atomic size

4. Low electronegativity

Q. In Sodium atom, the screening of $3s$ electron is due to:

1. $3s^2,3p^6$
2. $4s^1$
3. $1s^2,2s^2,2p^6$
4. $3s^1$

Q.

If the ionization enthalpy and electron gain enthalpy of an element are 275 Kcal/mole and 86 Kcal ${mol}^{-1}$ respectively, then the electro negativity of the element on mulliken scale is

1. 2.8

2. 0.0

3. 4.0

4. 2.6

Q.

Which of the following elements represent highly electro positive as well as highly electro negative element in its period?

1. Hydrogen

2. Nitrogen

3. Fluorine

4. None

Q. Atomic numbers of elements are given below. Which of them would have the least electronegativity?

1. $37$
2. $19$
3. $87$
4. $105$

Q. Correct order of electronegativities of N, P, C and Si is:

1. N > P > C > Si
2. C > Si > N > P
3. N < P < C < Si
4. N > C > P > Si

Q.

Which of the following elements represent highly electro positive as well as highly electro negative element in its period?

1. Hydrogen

2. Nitrogen

3. Fluorine

4. None

Q. The correct order of electronegativity is:

1. $Cl>S>Si>P$
2. $Cl>Si>S>P$
3. $Cl>S>P>Si$
4. $Cl>P>Si>S$

Q.

Arrange F, Cl, O, and N in the decreasing order of electronegativity.

1. O > F > N > Cl

2. F > N > Cl > O

3. Cl > F > N > O

4. F > O > N > Cl

Q. Arrange the following compounds in the increasing orders of their melting point.
$\text{I}.AgI$ $\text{II}.NaI$ $\text{III}.CuI$ $\text{IV}.NaCl$

1. $IV>II>III>I$
2. $I<III<II<IV$
3. $III>IV>II>I$
4. $I<IV<III<II$

Q. Which of the following halogens doesn't exhibit positive oxidation state in its compounds?

1. Cl

2. Br

3. I

4. F

Q.

Fluorine has the highest electronegativity among the $n{s}^{2}n{p}^5$ group on the Pauling scale, but the electron affinity of fluorine is less than that of chlorine because-

1. The atomic number of fluorine is less than that of chlorine.

2. Fluorine being the first member of the family behaves in an unusual manner.

3. Chlorine can accommodate an electron better than fluorine by utilizing its vacant 3d=orbital.

4. Small size, high electron density and an increased electron repulsion makes addition of an electron to fluorine less favourable than that in the case of chlorine.

Q. Choose the correct order of the following properties:

1. $F{e}^{+3}\left(aq\right)>F{e}^{2+}\left(aq\right):$ Ionic mobility order
2. $B{r}^{-}\left(aq\right)<C{l}^{-}\left(aq\right)<F^{-}\left(aq\right):$ Hydrated radius order
3. $B{e}^{2+}<M{g}^{2+}<C{a}^{2+}$ Enthalpies of hydration order
4. $N>C>H>B:$ Electronegativity order

Q. The ionisation enthalpies of atoms A and B are 400 and 300 $kcalmo{l}^{-l}$ respectively. The electron gain enthalpies of these atoms are 80.0 and 85.0 $kcalmo{l}^{-l}$ respectively. Which of the atoms has a higher electronegativity?

1. A
2. B
3. Both have same electronegativity
4. Can't be predicted

Q. The ionisation enthalpies of atoms A and B are 400 and 300 $kcalmo{l}^{-l}$ respectively. The electron gain enthalpies of these atoms are 80.0 and 85.0 $kcalmo{l}^{-l}$ respectively. Which of the atoms has a higher electronegativity?

1. A
2. B
3. Both have same electronegativity
4. Can't be predicted

Q.

A, B and C are hydroxy-compounds of the elements X, Y and Z respectively. X, Y and Z are in the same period of the periodic table. A gives an aqueous solution of pH less than seven. B reacts with both strong acids and strong alkalis. C gives an aqueous solution which is strongly alkaline

Which of the following statements is/are true

I : The three elements are metals

II : The electronegativities decrease from X to Y to Z.

III : The atomic radius decreases in the order X, Y and Z.

IV : X, Y and Z could be phosphorus, aluminium and sodium respectively :

1. I, II, III only correct
2. I, III only correct
3. II, IV only correct
4. II, III, IV only correct

Q.

If the ionization enthalpy and electron gain enthalpy of an element are 275 Kcal/mole and 86 Kcal ${mol}^{-1}$ respectively, then the electro negativity of the element on mulliken scale is

1. 2.8

2. 0.0

3. 4.0

4. 2.6

Q. The correct order of increasing acidic strengths is:

1. $C{l}_2{O}_7<P_4{O}_{10}<S{O}_3$
2. $C{l}_2{O}_7<S{O}_3<P_4{O}_{10}$
3. $P_4{O}_{10}<S{O}_3<C{l}_2{O}_7$
4. $P_4{O}_{10}<C{l}_2{O}_7<S{O}_3$

Q. Arrange the following compounds in the increasing orders of their melting point.
$\text{I}.AgI$ $\text{II}.NaI$ $\text{III}.CuI$ $\text{IV}.NaCl$

1. $IV>II>III>I$
2. $I<III<II<IV$
3. $III>IV>II>I$
4. $I<IV<III<II$

Q.

Electronegativity generally increases along a period from left to right.

1. True

2. False

Q. Identify the correct order of acidic strengths of $CuO,C{O}_2,CaO$ and $H_{2}O$:

1. $CaO<CuO<H_{2}O<C{O}_2$
2. $H_{2}O<CuO<CaO<C{O}_2$
3. $CaO<H_{2}O<CuO<C{O}_2$
4. $H_{2}O<C{O}_2<CaO<CuO$