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6 Radioactivity

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Question 103
H

An ion has 18 electrons and a relative charge of +2. Its nucleus contains 22 neutrons.

Which gives its atomic number and mass number?

[1]
A

Atomic number 20; mass number 42

B

Atomic number 18; mass number 40

C

Atomic number 16; mass number 38

D

Atomic number 20; mass number 40

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6 Radioactivity Questions

  1. GCSE
  2. /Physics
  3. /6 Radioactivity

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