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    Which particle has a negative charge?
    Question

    Which particle has a negative charge?

    A.

    Proton

    B.

    Neutron

    C.

    Electron

    D.

    Positron

    Correct option is C

    The correct answer is (c) Electron

    Explanation:

    • An electron is a subatomic particle that carries a negative charge. It orbits the nucleus of an atom and is involved in chemical reactions and electricity.
    • The negative charge of an electron is equal in magnitude but opposite in sign to the positive charge of a proton.
    • Electrons play a crucial role in the formation of ions and the electrical properties of matter.

    Information Booster:

    • Electrons are fundamental particles found in atoms, along with protons and neutrons. They have a mass approximately 1/1836th of that of a proton and are essential for the chemical properties of elements.
    • The charge of an electron is exactly -1.602 × 101910^{-19}​ Coulombs, which is a standard value.
    • Electrons are located in electron clouds or orbitals around the nucleus, which contains protons and neutrons.
    • Discovered by J.J. Thomson in 1897​
    • The behavior of electrons is described by quantum mechanics, which governs their movement, interaction with light, and ability to form bonds with other atoms.

    Additional Knowledge:

    Proton:

    • Discovered by Ernest Rutherford in 1917.
    • A proton is a positively charged particle found in the nucleus of an atom. Its charge is +1.602 × 101910^{-19}​ Coulombs, which is the opposite of the electron's negative charge. Protons, together with neutrons, make up most of the mass of an atom.

    Neutron:

    • A neutron is a neutral particle, meaning it carries no charge. Discovered by James Chadwick in 1932.
    • It is found in the nucleus of an atom and has a mass roughly equal to that of a proton.
    • Neutrons play a vital role in stabilizing the nucleus by balancing the repulsive forces between positively charged protons.

    Positron:

    • A positron is the antimatter counterpart of the electron.
    • Theoretical Prediction: Paul Dirac (1928)
    • Experimental Discovery: Carl Anderson (1932)
    • It carries a positive charge and has the same mass as an electron.
    • When a positron encounters an electron, they annihilate each other in a process known as pair annihilation, releasing energy in the form of gamma rays.

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