Chemistry
Assertion (A): Atoms can combine either by the transfer of valence electrons from one atom to another or by sharing of valence electrons.
Reason (R): Sharing and transfer of valence electrons is done by atoms to have an octet in their valence shell.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Chemical Bonding
3 Likes
Answer
Both A and R are true and R is the correct explanation of A.
Explanation — By sharing the valence electron pair, atoms can combine to form Covalent bond and by transfering electron(s), atoms establish a strong electrostatic attraction to form an Ionic bond.
Atoms always try to attain their stable elctron configuration i.e., to have 8 electrons in their valence shell. So, both Assertion (A) and Reason (R) are true and Reason (R) correctly explains Assertion (A).
Answered By
2 Likes
Related Questions
The formation of a covalent bond between two atoms is favoured when:
P. both the atoms have a large difference in electronegativity
Q. both the atoms have high electron affinity
R. both the atoms have high electronegativity- Only P
- Only Q
- Both P and Q
- Both Q and R
Assertion (A): If the electron affinity value is high, anions are formed easily.
Reason (R): Ionic bonding is favoured by high electron affinity.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Ionic compounds conduct electricity in molten or aqueous state.
Reason (R): Ionic compounds consist of molecules.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): A pair of electrons not shared with any other atom is known as a lone pair.
Reason (R): Ammonium ion has a lone pair.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.