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13 August, 07:51

Which of the following does not describe nor

contain electrons?

1. a subatomic particle having a mass of

0.00055 u

2. a cathode ray

3. a subatomic particle having a charge of

-1

4. a γ ray

5. a β particle

+3
Answers (1)
  1. 13 August, 08:09
    0
    Cathode ray - a beam of electrons emitted from the cathode of a high-vacuum tube.

    Beta particle - A beta particle, sometimes called beta ray is a high-energy, high-speed electron or positron emitted in the radioactive decay of an atomic nucleus.

    It is a subatomic particle indeed with given mass and charge.

    So the answer is 4. a Gamma ray

    Gamma ray - Gamma rays (also called gamma radiation) are penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei. It consists of photons in the highest observed range of photon energy.
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