BF3 forms an adduct with NH3 because
1.nitrogen has a high electronegativity
2.boron has a high electronegativity
3.boron has an empty p-orbital and nitrogen has one lone pair of electrons
4.boron has an electropositive character
Posted Date:-2021-03-07 09:06:14
Which of the following compounds contain all three types: ionic, covalent and dative bonds?
1.CuSO4.5H2O
2.Solid N2O5
3.(NH4)2SO4
4.All
Posted Date:-2021-03-07 09:06:14
Which of the following compounds has electrovalent linkage?
1.CH3Cl
2.NaCl
3.CH4
4.Cl2
Posted Date:-2021-03-07 09:06:14
A molecule with multiple covalent bonds is
1.C2H4
2.H2
3.F2
4.N2
Posted Date:-2021-03-07 09:06:14
Each of the following pairs of chemical species will combine. Which of the following combinations is best explained by the coordinate covalent bond?
1.H2 + I2
2.Mg +O2
3.Cl + Cl
4.H+ + H2O
Posted Date:-2021-03-07 09:06:14
Protons play an important role in which type of bonding?
1.electrovalent
2.hydrogen
3.covalent
4.coordinate
Posted Date:-2021-03-07 09:06:14
The type of bond formed during the hydration of cation is
1.ionic
2.covalent
3.electrostatic
4.dative bond
Posted Date:-2021-03-07 09:06:14
The weakest bond is
1.Hydrogen
2.Van der Waals
3.Covalent
4.Coordinate
Posted Date:-2021-03-07 09:06:14
When two species A and B form an electron-pair bond and A does not provide its electrons for bonding, the bond present between A and B must be
1.Hydrogen
2.ionic
3.covalent
4.dative
Posted Date:-2021-03-07 09:06:14
Which of the following bonds has the most polar character?
1.C-O
2.C-Br
3.C-S
4.C-F
Posted Date:-2021-03-07 09:06:14