Coordinate Bond

Q. Find the total number of $2c-2e$ and $3c-2e$ bonds in $Be(B{H}_4{)}_2$ respectively.

1. $6,4$
2. $4,6$
3. $4,4$
4. $4,8$

Q. $N{H}_3$ and $B{F}_3$ combine readily with the formation of:

1. a covalent bond
2. a hydrogen bond
3. a coordinate bond
4. an ionic bond

Q. The coordinate covalent bond differs from covalent bond in:

1. The covalent nature
2. The overlapping of orbitals
3. The donation or sharing in electrons
4. All of the above

Q. Which of the following molecule has no dative bond?

1. $CO$
2. $C{O}_3^{2-}$
3. $N{H}_4^{+}$
4. All of these

Q. More than One Answer Type
एक से अधिक उत्तर प्रकार के प्रश्न

Molecules having only π-bond(s) is/are

केवल π-बंध(बंधों) वाले अणु है/हैं

1. C₂
2. Li₂
3. B₂
4. O₂

Q. The $B—F$ bond length is the shortest in which of the following species?

1. $B{F}_4^{-}$
2. $B{F}_3\leftarrow N{H}_3$
3. $B{F}_3$
4. $B{F}_3\leftarrow N(C{H}_3{)}_3$

Q. Which of the following statement is correct regarding coordinate bond?

1. Electrons are equally shared by the atoms
2. Electrons of one atom are shared between two atoms
3. Hydrogen bond is formed
4. Electrons are completely donated to other atom with no sharing

Q. $N{H}_3$ and $B{F}_3$ form an adduct readily because they form:

1. Covalent bond
2. Coordinate bond
3. Ionic bond
4. hydrogen bond

Q. Which of the following statement is false:

1. In $XeO{F}_4$, the central atom $Xe$ doesnot lie on the plane of the square
2. In $P{F}_{2}C{l}_3$, both the $F$ atoms lie on the axial bond
3. The dipole moment of $C{H}_{3}F$ is greater than $C{H}_{3}Cl$
4. In $PC{l}_3$, the axial bond length is longer than the equatorial bond length

Q. In covalent bond, centre atoms try to remain in maximum covalency. What does this line mean?