science
Grade-9
Easy
Question
Which of the following is correct regarding the atom?
- An atom has an equal number of protons and neutrons.
- An atom has an equal number of electrons and protons.
- An atom has an equal number of electrons and neutrons.
- All the above
Hint:
In an atom, the number of protons will be equal to the number of electrons.
The correct answer is: An atom has an equal number of electrons and protons.
- The atomic theory says that atoms are formed of protons, neutrons, and electrons.
- The protons and neutrons will be bound in the nucleus which is the central core of an atom.
- The electrons will be distributed in the shells around the nucleus according to the energy levels.
- The number of protons in an atom will be equal to the number of electrons.
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