Question

Which of the following describes an atom?

A. smallish units of two hydrogen joined together
B. 6 protons six neutrons in the nucleus and six electrons in the electron cloud
C. hydrogen chemically combined with an oxygen
D. 6 protons 6 neutrons in the nucleus and seven electrons in the electron cloud​

Answer 1

Correct answer is option (3) .

Step-by-step explanation:

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