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Practise Question - 19 Video Lecture | Crash Course for EmSAT Achieve
FAQs on Practise Question - 19 Video Lecture - Crash Course for EmSAT Achieve
| 1. What are energy levels in an atom? |  |
Ans. Energy levels in an atom refer to the specific regions or shells where electrons can exist. These energy levels are represented by different quantum numbers and are arranged in a hierarchical manner, with the lowest energy level being closest to the nucleus.
| 2. How do electrons revolve around the nucleus? | |
Ans. Electrons revolve around the nucleus in specific energy levels or orbits. According to the Bohr model of the atom, electrons move in circular paths around the nucleus, similar to the way planets orbit the sun. However, it is important to note that the modern understanding of electron behavior is described by quantum mechanics, where electrons are considered to occupy probabilistic regions called orbitals rather than following a specific path.
| 3. What determines the energy level of an electron? | |
Ans. The energy level of an electron is determined by its distance from the nucleus. Electrons in higher energy levels are further away from the nucleus and have higher energy. The energy level also depends on the specific chemical element and its atomic structure.
| 4. Can electrons move between energy levels? | |
Ans. Yes, electrons can move between energy levels by absorbing or releasing energy. When an electron absorbs energy, it moves to a higher energy level. Conversely, when an electron emits energy, it moves to a lower energy level. These transitions can occur through various processes, such as absorption or emission of photons.
| 5. How are the energy levels of electrons useful in understanding chemical reactions? | |
Ans. The energy levels of electrons play a crucial role in understanding chemical reactions. The interaction of electrons in different energy levels determines the stability and reactivity of atoms and molecules. Chemical reactions involve the rearrangement of electrons, which can only occur if the energy levels allow for such changes. Hence, studying the energy levels helps us understand the behavior and properties of different elements and compounds.
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Nov 24, 2024 Last updated |
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