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P-Block Elements Trends: Electronegativity Video Lecture | Chemistry Class 11 - NEET

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FAQs on P-Block Elements Trends: Electronegativity Video Lecture - Chemistry Class 11 - NEET

1. What is electronegativity?
Ans. Electronegativity is a measure of an atom's ability to attract electrons towards itself when it is involved in a chemical bond. It indicates the relative attraction an atom has for the shared electrons in a covalent bond.
2. How is electronegativity determined?
Ans. Electronegativity is determined using various scales, the most commonly used being the Pauling scale. Linus Pauling assigned arbitrary values to elements based on their chemical behavior and bond strengths. These values can be found in the periodic table and are used to compare the electronegativity of different elements.
3. What are the trends in electronegativity across the p-block elements?
Ans. Across the p-block elements, electronegativity generally increases from left to right across a period. This trend is due to the increasing effective nuclear charge, which attracts electrons more strongly towards the nucleus. However, electronegativity decreases down a group as the atomic size increases, leading to a weaker attraction for electrons.
4. How does electronegativity affect chemical bonding?
Ans. Electronegativity plays a crucial role in determining the type of chemical bond formed between two atoms. When the electronegativity difference between two atoms is large, an ionic bond is formed, where electrons are transferred from one atom to another. In contrast, when the electronegativity difference is small, a covalent bond is formed, where electrons are shared between the atoms.
5. Can electronegativity be used to predict the polarity of a molecule?
Ans. Yes, electronegativity can be used to predict the polarity of a molecule. If the electronegativity difference between two atoms in a molecule is significant, the bond between them will be polar. The atom with higher electronegativity will have a partial negative charge, while the atom with lower electronegativity will have a partial positive charge. This creates a dipole moment, resulting in a polar molecule.
195 videos|337 docs|190 tests
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