Ionic Bond

Q.

Ionic solids conduct electricity in molten state but not in solid state. Explain.

Q. From the following pairs of ions which one is not an iso-electronic pair ?

1. $O^{2-},F^{-}$
2. $N{a}^{+},M{g}^{2+}$
3. $M{n}^{2+},F{e}^{3+}$
4. $F{e}^{2+},M{n}^{2+}$

Q. What is meaning of Non directional bond in simple terms?

Q.

Assertion: Molarity of a solution in liquid state changes with temperature.

Reason: The volume of a solution changes with change in temperature

1. Assertion and reason both are incorrect statements.

2. Assertion is wrong statement but the reason is correct statement.

3. Assertion is correct statement but the reason is wrong statement

4. Assertion and reason both are correct statements and reason is the correct explanation for assertion.

5. Assertion and reason both are correct statements but the reason is not the correct explanation for assertion.

Q.

Formula to calculate bond disassociate energy?

Q. 20. WHY PHENOXIDE ION IS MORE STABLE THAN PHENOL??

Q.

Hydrogen ion and singly ionized helium atom are accelerated, from rest, through the same potential difference.

1. 2:1

2. 1:2

3. 5:7

4. 10:7

Q. The compound containing ionic, covalent and coordinate covalent bonds is? 1) CHCl3. 2) Na2CO3. 3) NH4Cl. 4) C2H2

Q.

Is NaCl a single covalent bond?

Q. Which of the following can conduct electricity in a fused or molten state?

1. $NaCl$
2. $ZnS$
3. Both (a) and (b)
4. $BeC{l}_2$

Q. For adsorption of gas on a solid, the plot of log x/m vs log P is linear with slope equal to: (n being whole number)

1. K
2. log k
3. n
4. 1/n

Q. For a reaction scheme, $A\stackrel{k_1}{\to }B\stackrel{k_2}{\to }C$, if the rate of formation of $B$ is set to be zero then the concentration of $B$ is given by:

1. $k_1{k}_2\left[A\right]$
2. $\frac{k_1}{k_2}\left[A\right]$
3. $(k_1-k_2)\left[A\right]$
4. $k_1+k_2\left[A\right]$

Q. The experimental value of dipole moment of $HCl$ is $1.05D$. The length of the $H-Cl$ bond is $1.250A^{\circ }$. The percentage of ionic character in $HCl$ is: (Given, $\frac{2}{3.34}=0.6$)

Q. In $\left(B_4{O}_5\right(OH{)}_4{)}^{2-}$ the number of boron atoms having an octet of elelctron is:

1. $2$
2. $1$
3. $0$
4. $4$

Q. Cations and anions combine in a crystal to form which type of a compound?

1. Ionic
2. Metallic
3. Covalent
4. Dipole-dipole

Q.

Write the favourable factors for the formation of ionic bond.

Q.

The ions of NaF and MgO all have the same number of electrons and the internuclear distance are about the same (235pm and 215pm).Why then are the melting points of NaF and MgO so different (992 degree C and 2642degree celcius)?

Q.

Increase in ionic character of LiF, K2O, SO2, N2, ClF3. sir please explain in detail

Q.

Show the formation of ${\mathrm{Na}}_2\mathrm{O}$ by transfer of electrons?

Q.

Explain with the help of an ionic equation for the formation of the following :

Sodium chloride

Q.

Question 43

Arrange the following bonds in order of increasing ionic character giving reason.

N - H, F - H, C - H and O - H

Q.

What are double covalent bonds

Q. Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54A the value of lattice constant for this lattice is

Q. which does not contain coordinate bond-
1. BH4-
2.NH2-
3.CO3^2-
4.H3O+

Q. $P{H}_3$ forms bubbles when passed slowly in water but $N{H}_3$ dissolves. Explain why?

Q. Number of unshared pair of electrons that an ammonia molecule has is are:

Q. Which of the following factor(s) affect the rotation of plane polarized light?

1. Temperature
2. Wavelength of light
3. Solvent
4. All of the above.

Q. According to octet rule the compound which contain ionic covalent and coordinate bonds 1)Caso4 2)NH4CL 3)NaNo3 4)ALL

Q.

What type of lattice do the alkali metal hydrides possess?

Q.

How is an ionic compound formed?