A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.

1. What is such a particle called.........

2. What is the mass number of X............ 

3. What is the atomic number of X........

4. Does the particle have an excess of electrons or a deficiency of electrons...........

5. What is the charge on the particle...............

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1 Answers

1. What is such a particle called anion

2. What is the mass number of X 35

3. What is the atomic number of X 17

4. Does the particle have an excess of electrons or a deficiency of electrons excess of electrons

5. What is the charge on the particle – 1 (negative)

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