(a) What happens to the atomic number of an element when it emits: 1.

1.	(a) What happens to the atomic number of an element when it emits: 1. an alpha particle 2. a beta particle. (b) Explain why alpha and beta particles are deflected in an electric or a magnetic field but gamma rays are not deflected in such a field.
Answer» (a) 1. When an a-particle is emitted, its atomic number decreases by 2. 2. When a beat particle is emitted, the atomic number increases by 1. (b) α-particles and beta particles when subjected to an electric field are deflected. This is so because both the α - particles and beta particles are charged. Electric field exerts a force on them which deflects them. However, γ rays are not deflected because they are not charged and do not experience any force. Hence they are not deflected.

(a) What happens to the atomic number of an element when it emits: 1. an alpha particle 2. a beta particle. (b) Explain why alpha and beta particles are deflected in an electric or a magnetic field but gamma rays are not deflected in such a field.

Answer»

(a) 1. When an a-particle is emitted, its atomic number decreases by 2.

2. When a beat particle is emitted, the atomic number increases by 1.

(b) α-particles and beta particles when subjected to an electric field are deflected. This is so because both the α - particles and beta particles are charged. Electric field exerts a force on them which deflects them. However, γ rays are not deflected because they are not charged and do not experience any force. Hence they are not deflected.

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(a) What happens to the atomic number of an element when it emits: 1. an alpha particle 2. a beta particle. (b) Explain why alpha and beta particles are deflected in an electric or a magnetic field but gamma rays are not deflected in such a field.

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