webbjalia04
06.07.2019 •
Chemistry
Strontium has the atomic number of 38 and a mass number of 88 how many neutrons are in one atom of strontium a.) 50 b.) 38 c.) 88 d.) 126
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Ответ:
The correct answer is Option A.
Explanation:
Atomic number is defined as the number of protons or electrons that are present in a neutral atom.
Atomic number = number of protons = number of electrons
Mass number is defined as the sum of number of protons and number of neutrons present in an atom.
Mass number = Number of neutrons + Number of protons.
We are given:
Atomic number = 38
Mass number = 88
Number of neutrons = Mass number - Atomic number = 88 - 38 = 50
Hence, the correct answer is Option A.
Ответ: