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Tanzania [10]
3 years ago
10

What determines the atomic number of an atom?. . A.. the number of neutrons in two atoms of an element. . B.. the number of elec

trons in the outer layer of any atom. . C.. the number of protons in every atom of an element. . D.. the number of protons plus the number of neutrons in an atom.
Chemistry
1 answer:
WINSTONCH [101]3 years ago
6 0
<span>The number of protons in every atom of an element determines the atomic number of an atom. Short after Rutherford made the gold foil experiment, the British scientist Henry Mosely discovered that the atoms of every element have a unique positive charge in their nuclei. This positive charge is the number of protons and is called atomic number. So, the atomic number identifies every different element.</span>
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What is the overall charge of an atom with 18 protons, 18 neutrons, and 19 electrons?
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Answer:

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but, as Atomic No. = Mass No. - No. of neutrons

Atomic No. = No. of protons = 18

so, Mass No. = Atomic No. + No. of Neutrons= 18 + 20 = 38

so, correct option is C.

Explanation:

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How many significant digits are in 2804
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Further explanation

https://socratic.org/questions/how-many-grams-are-there-in-4-50-moles-of-ba-no-2-2#:~:text=Therefore%2C%20there%20are%201031.85%20grams,(NO2)2%20.

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