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Engineering Exams RRB-JE Civil and Allied Engineering General Abilities 2019 19-Sept-2019 Paper-2 Shift-1 Easy +1 -0.33
If number of electrons in an atom is 8 and number of protons is also 8, what is the atomic number of the atom?
Correct Answer: D. 8
Explanation: The atomic number of an atom is defined by the total number of protons located within its nucleus. In a neutral atom, the number of protons and electrons is identical to maintain electrical balance. Since the atom in question contains 8 protons, its atomic number is 8. This specific atomic number identifies the element as oxygen.
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