Chemical Bonding Questions

Which set of molecules is polar:

The cyanide ion, CN⁻ and N₂ are isoelectronic. But in contrast to CN⁻, N₂ is chemically inert, because of:

Which is most ionic:

The boiling point of ICl is nearly 40°C higher than that of Br₂ although the two substances have the same relative molecular mass. This is because:

The lattice energies of the oxides of Mg, Ca, Sr and Ba follow the order:

The type of bonds present in CuSO₄·5H₂O are:

The order of increasing lattice energy of the following compound is:

Select correct statement about hydrolysis of BCl₃ and NCl₃:

The lattice energies of KF, KCl, KBr and KI follow the order:

In terms of polar character, which of the following order is correct:

Fluorine does not form any polyhalide as other halogens because:

Carbon atoms in the compound (CN)₄C are:

The order of increasing bond length in F₂, N₂, Cl₂ and O₂ is:

In which of the following pair the boiling point of first compound is not more than the second :

How many σ and π bonds will be in allyl isocyanide:

The order of increasing bond angle in the molecules BeCl₂, BCl₃, CCl₄ and SF₆ is:

A : Tetracyanomethane, B : Carbondioxide, C : Benzene, D : 1, 3 butadiene ratio of σ and π bonds is in order:

Which of the following statements is wrong:

The Cl–C–Cl angle in 1,1,2,2-tetrachloroethene and tetrachloro methane respectively will be about:

The correct sequence of increasing covalent character is represented by:

Four elements A (with one valence electron), B (with three valence electrons), C (with five valence electrons) and D (with seven valence electrons) are lying in the second period which of periodic table which of the following is/are diatomic at room

Identify the correct statement from the given alternatives:

Choose the molecules in which hybridisation occurs in the ground state: (1) BCl₃ (2) NH₃ (3) PCl₃ (4) BeF₂ The correct answer is:

Hydrogen bonding is different than the other three is shown by -

Which of the following set contains species having same angle around the central atom:

The bond angle in H₂O is nearly 105° whereas bond angle in H₂S is nearly 90°. This is because:

The correct increasing order of extent of hydrolysis is :

Which of the following statement concerning a covalent bond is false :

The ratio σ bond π bond in tetracyano ethylene:

Which one of the following postulates is wrong about the electron gas theory of metallic bonding:

What is not true about resonance:

The geometrical arrangement and shape of I₃⁻ are respectively:

The formation of which of the following ions is not possible -

The hybridization of phosphorous in POCl₃ is the same as in:

In which of the following molecules S atom does not assume sp³ hybridisation:

In the series, ethane, ethylene & acetylene, the carbon-hydrogen bond length is:

The value of bond order in NO⁺ according to MOT is:

Which of the following match is not correct:

Which is not correct:

Amongst NH₃, BeCl₂, CO₂ and H₂O, the non-linear molecules are :

In the electronic structure of acetic acid the number of electrons present are:

The compound formed by which of the following pair of ions will have lowest melting point :

The nature of intermolecular forces among benzene (C₆H₆) molecules is:

Acetic acid is a dimer in benzene due to:

Which of the following does not apply to metallic bond:

Number of valence electrons present in atoms of HClO₄, HClO₃, HClO₂ respectively are:

Which one of the following molecules has highest dipole moment:

Which of the following has zero value of dipole moment:

Which of the following compounds is non-polar:

The pair of molecules having identical geometry is: