Elements with electronegativities 1.2 and 3.0 form
1.electrovalent bond
2.covalent bond
3.coordinate bond
4.metallic bond
In which of the following C-C bond length is least?
1.benzene
2.diamond
3.ethylene
4.acetylene
Ionic compounds don’t conduct electricity in
1.solution
2.fused state
3.solid state
4.none of the above
The paramagnetic nature of oxygen molecule is explained by
1.Valence bond theory
2.Heitler London theory
3.Hund Mulliken theory
4.none of the above
The percentage of ionic character of a bond is calculated by the difference in
1.size of atoms
2.ionization potential of atoms
3.electronegativity of atoms
4.atomic volumes of atoms
An element having 4 electrons in its outermost orbit forms bond by
1.losing electrons
2.gaining electrons
3.sharing electrons
4.any of the above
Electrovalent compounds are
1.low melting
2.insoluble in polar solvents
3.conductors in the fused state
4.none of the above
The bond between two atoms of the same element is
1.polar covalent bond
2.ionic bond
3.non-polar covalent bond
4.none of the above
The bonds present in CuSO4.5H2O are
1.electrovalent and coordinate
2.covalent and coordinate
3.electrovalent and covalent
4.electrovalent, covalent and coordinate
When an element of very low ionization potential reacts with an element of very high electron affinity
1.a covalent bond is formed
2.an electrovalent bond is formed
3.a metallic bond is formed
4.no bond is formed