What is the atomic number in the periodic table?
A) A shorthand way to refer to the element when writing chemical equations
B) The number of protons found in the nucleus of an atom
C) The approximate sum of the number of protons and neutrons found in the nucleus of an atom
D) A measure of the amount of hydrogen ions in a solution that can react and indicate whether a substance is an acid or a base
Answer: B
Explanation: A) Incorrect. A chemical symbol is a shorthand way to refer to the element when writing chemical equations.
B) Correct. Atomic number is the number of protons found in the nucleus of an atom.
C) Incorrect. Atomic weight is the approximate sum of the number of protons and neutrons found in the nucleus of an atom.
D) Incorrect. Ph is a measure of the amount of hydrogen ions in a solution that can react and indicate whether a substance is an acid or a base.
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