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Atomic Structure PPT Chemistry Class 12
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FAQs on Atomic Structure PPT Chemistry Class 12
| 1. What is the atomic structure? |  |
Ans. The atomic structure refers to the organization and arrangement of subatomic particles within an atom. It includes the nucleus, which consists of protons and neutrons, and the electron cloud, where electrons orbit around the nucleus.
| 2. How are protons and neutrons different? | |
Ans. Protons and neutrons are both subatomic particles found in the nucleus of an atom. The main difference between them is their charge. Protons have a positive charge, while neutrons have no charge or are neutral. Additionally, protons determine the atomic number of an element, whereas neutrons affect the mass number.
| 3. What is the significance of electrons in the atomic structure? | |
Ans. Electrons play a crucial role in the atomic structure. They are negatively charged particles that orbit the nucleus in specific energy levels or shells. The arrangement of electrons determines the chemical properties and reactivity of an atom. Furthermore, electron interactions between atoms are responsible for the formation of chemical bonds.
| 4. How are energy levels related to the atomic structure? | |
Ans. Energy levels, also known as electron shells or orbitals, are regions around the nucleus where electrons are likely to be found. These energy levels are denoted by the principal quantum number (n). The first energy level (n=1) is closest to the nucleus and can hold up to 2 electrons, while the subsequent levels can hold more. The energy levels determine the overall size of an atom.
| 5. Can the atomic structure of an element change? | |
Ans. The atomic structure of an element can change under certain circumstances. For example, during a nuclear reaction, such as radioactive decay or nuclear fission, the nucleus can undergo changes by gaining or losing protons and neutrons. However, the number of protons determines the identity of the element, so any change in the number of protons would result in a different element.
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