Answer :
1. What is an electron?
An electron is a subatomic particle with a negative charge that orbits the nucleus of an atom. It is one of the fundamental components of an atom along with protons and neutrons. Electrons are responsible for chemical bonding and determining the reactivity of an element. They have a much smaller mass compared to protons and neutrons.
2. Why was Rutherford surprised that some alpha particles bounced back from the gold foil?
Ernest Rutherford conducted the gold foil experiment to understand the structure of an atom. He expected alpha particles to pass through the gold foil with minor deflection since he believed atoms were mostly empty space. However, he was surprised when some alpha particles bounced back, indicating that atoms have a dense nucleus at their center.
3. What is the nucleus of an atom?
The nucleus of an atom is the central core that contains protons and neutrons. It is positively charged due to the presence of protons and accounts for most of the atom's mass. The nucleus is tiny compared to the overall size of the atom but plays a crucial role in determining the element's identity and properties. Electrons orbit around the nucleus in specific energy levels.
An electron is a subatomic particle with a negative charge that orbits the nucleus of an atom. It is one of the fundamental components of an atom along with protons and neutrons. Electrons are responsible for chemical bonding and determining the reactivity of an element. They have a much smaller mass compared to protons and neutrons.
2. Why was Rutherford surprised that some alpha particles bounced back from the gold foil?
Ernest Rutherford conducted the gold foil experiment to understand the structure of an atom. He expected alpha particles to pass through the gold foil with minor deflection since he believed atoms were mostly empty space. However, he was surprised when some alpha particles bounced back, indicating that atoms have a dense nucleus at their center.
3. What is the nucleus of an atom?
The nucleus of an atom is the central core that contains protons and neutrons. It is positively charged due to the presence of protons and accounts for most of the atom's mass. The nucleus is tiny compared to the overall size of the atom but plays a crucial role in determining the element's identity and properties. Electrons orbit around the nucleus in specific energy levels.
