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joeblaszak4776
02.08.2019 •
Chemistry
Atom x has an atomic number of 19 and has a mass number of 39. the number of protons in atom x is equal to
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Ответ:
Answer : The number of protons in atom X is equal to 19.
Explanation :
Atomic number is defined as the number of protons or number of electrons.
Atomic number = number of protons = number of electrons
Mass number is defined as the sum of number of protons and number of neutrons.
Number of neutrons = Mass number - Number of protons
As we are given that:
Atomic number of atom X = 19
Mass number of atom X = 39
As, Atomic number = number of protons = number of electrons
So, Number of proton in atom X = Atomic number of atom X = 19
Hence, the number of protons in atom X is equal to 19.
Ответ: