Which of the following statements is always correct?

  • A
    An atom has an equal number of electrons and neutrons.
  • B
    An atom has an equal number of protons and neutrons.
  • C
    An atom has an equal number of electrons and protons.
  • D
    An atom has an equal number of electrons,protons,and neutrons.

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Similar Questions

In a sample of ethyl ethanoate $(CH_{3}COOC_{2}H_{5})$,the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it?

$(a)$ Why are anode rays called canal rays?
$(b)$ Mention two postulates of $J. J.$ Thomson's model.
$(c)$ Compare the properties of protons and electrons.

Which property of an element can be used for its identification?

An ion $X^{2+}$ contains $18$ electrons and $20$ neutrons. Calculate the atomic number and mass number of element $X$. Name the element $X$.

Write three observations of Rutherford's alpha particles scattering experiment.

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