(a)
Interpretation:
Number of protons and electrons in a radon atom needs to be determined.
Concept introduction:
Proton is a subatomic particle that carries a positive charge. An electron is a subatomic particle that carries a negative charge.
Answer to Problem 12PP
86 electrons and 86 protons are present in one radon atom.
Explanation of Solution
Radon is a chemical element in the periodic table. Its symbol is Rn and
Therefore, there are 86 electrons and 86 protons in one atom of radon.
(b)
Interpretation:
Number of protons and electrons in a magnesium atom needs to be determined.
Concept introduction:
Proton is a subatomic particle that carries a positive charge. An electron is a subatomic particle that carries a negative charge.
(b)
Answer to Problem 12PP
12 electrons and 12 protons are present in one magnesium atom.
Explanation of Solution
Magnesium is a chemical element in the periodic table. Its symbol is Mg and the atomic number is 12. It is the ninth most abundant element in the universe.
Therefore, there are 12 electrons and 12 protons in one atom of radon.
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Chemistry: Matter and Change
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