Subjective Type

What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example of each type.

Solution

Two atoms share one electron each to form a covalent bond.
The electrons present in the covalent bond are known as bond pair of electrons.
For example, in methane, there are four C-H covalent bonds.
Thus, in methane molecule, four bond pairs of electrons are present.
The electron pairs left in the valence shell without forming the bond are known as lone pairs of electrons.
For example, ammonia molecule has one lone pair of electrons and water molecule has two lone pairs of electrons.

SIMILAR QUESTIONS

Chemical Bonding

Molecule having maximum number of covalent bonds is:

Chemical Bonding

The total number of lone pairs in chlorate ion is:

Chemical Bonding

The nitrogen atom has an atomic number $$7$$ and oxygen has an atomic number $$8$$ Calculate the total number of electrons in nitrate ion.

Chemical Bonding

Which of the following species has four lone pairs of electrons in its outer shell ?

Chemical Bonding

Total number of lone pair of electrons in $$I_3{^-}$$ ion is :

Chemical Bonding

Give the correct order of initials T or F for following statements. Use T if statement is true and F if it is false : (i) The order of the repulsion between different pair of electrons is $$l_{p} - l_{p} > l_{p}- b_{p} > b_{p}- b_{p}$$ (ii) In general, as the number of lone pair of electrons on central atom increases, value of bond angle from normal bond angle also increases (iii) The number of lone pair on O in $$H_{2}O$$ is 2 while on N in $$NH_{3}$$ is 1 (iv) The structures of xenon fluorides and xenon oxyfluorides could not be explained on the basis of VSEPR theory

Chemical Bonding

Calculate the value of X-Y, for $$XeOF_{4}$$. (X = Number of $$\sigma$$ bond pair and Y = Number of lone pair on central atom)

Chemical Bonding

Calculate x + y + z for $$H_{3}PO_{3}$$ acid, where x is no. of lone pairs , y is no. of bonds and z is no.of $$\pi$$ bonds

Chemical Bonding

Number of lone pairs and bond pairs in ammonia molecule is ___________.

Chemical Bonding

The number of bond pairs in the molecule $$PCl_5$$ is __________.

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