Covalent Bond

In acetylene molecule, $\mathrm{C}-\mathrm{H}$ sigma bond is formed by:

What type of bonding is there between hydrogen and fluorine in $\mathrm{HF}$ molecule ?

Give an example of a covalent bond formed by dissimilar atoms.

Draw the electron-dot structure of ethyne.

Write the chemical formual of ethyne.

An example of a compound with a single covalent bond is 

Define a single covalent bond.

Covalent bond is formed when the combining atoms come from the electronegative elements.

Bonds present in ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$ are 

Explain the method of forming chlorine molecule by the overlapping of atomic orbitals.

Structure of blue vitriol shows presence of

The number of covalent bonds and lone pairs in ${\mathrm{H}}_2{\mathrm{O}}_2$ molecule are respectively

The number of covalent bonds in ethylene is

Which of the following molecule has two lone pair and two covalent bonds?

Ozone molecule contains

Which of the following has a triple covalent bond?

Which amongst the following molecules contains double covalent bond?

In the molecular structure of ethanoic acid $\left({\mathrm{CH}}_3\mathrm{COOH}\right)$, how many oxygen atoms are bonded to carbon by a double covalent bond?

In $S_8$ molecule, eight sulphur atoms are joined by covalent bonds to form octacyclic ring.The number of lone pairs in the molecule is

In ethanol $\left(C_2{H}_{5}OH\right)$ molecule, the number of covalent bonds and lone pair respectively are