NEET Exam > NEET Videos > Chemistry Class 11 > P-Block Elements Trends: Electron Gain Enthalpy
P-Block Elements Trends: Electron Gain Enthalpy Video Lecture | Chemistry Class 11 - NEET
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FAQs on P-Block Elements Trends: Electron Gain Enthalpy Video Lecture - Chemistry Class 11 - NEET
| 1. What is electron gain enthalpy? |  |
Ans. Electron gain enthalpy refers to the energy change that occurs when an atom or ion gains an electron to form a negative ion. It is a measure of the ability of an atom to accept an additional electron.
| 2. What factors affect the electron gain enthalpy of p-block elements? | |
Ans. The electron gain enthalpy of p-block elements is influenced by factors such as atomic size, nuclear charge, electron shielding, and electron-electron repulsion. Larger atoms with higher nuclear charge tend to have more negative electron gain enthalpies.
| 3. How does the electron gain enthalpy vary across a period? | |
Ans. In general, the electron gain enthalpy increases across a period from left to right. This is because the atomic size decreases while the nuclear charge increases, leading to a stronger attraction for incoming electrons.
| 4. What is the trend of electron gain enthalpy down a group? | |
Ans. The electron gain enthalpy generally decreases down a group. This is because the atomic size increases, resulting in weaker attraction between the nucleus and incoming electrons.
| 5. Can the electron gain enthalpy of an element be positive? | |
Ans. Yes, the electron gain enthalpy of an element can be positive. This occurs when the addition of an electron results in the formation of a less stable or less favorable electron configuration. In such cases, the atom may not readily accept an additional electron.
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