Chemistry
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
Chemical Bonding
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Answer
Both Q and R
Reason — Covalent bond between two atoms is favoured when
- The electronegativity difference between the combining atoms should either be zero or negligible.
- Both the atoms should have high electron affinity.
- Both the atoms should have high electronegativity.
Hence both Q and R are correct.
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Related Questions
Compound 'X' consists of only molecules. 'X' will have —
- A Crystalline hard structure
- A low melting and boiling point
- An ionic bond
- A strong force of attraction between it's molecules.
The molecule which contains a triple covalent bond is:
- ammonia
- methane
- water
- nitrogen
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): 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.