The number of protons is equal to ________ in a neutral atom.
both B and C
atomic weight
atomic number
number of electrons
A
both B and C
B
atomic number
C
number of electrons
D
atomic weight
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Solution
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The atomic number is the number of protons in an atom of an element. Atoms are electrically neutral. That means that there must be a balance between the positively charged protons and the negatively charged electrons.
Thus, atoms must have equal numbers of protons and electrons.
Hence, the correct option is D
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