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Answered

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Given the atomic
notation of 19/9 X, identify element X.
a fluorine
b neon
C potassium
d nickel

Sagot :

Answer:

a

Explanation:

its electron arrangements is 9

Answer: Choice A) fluorine

Explanation:

The notation [tex]^{19}_9X[/tex] refers to some element X that has 9 protons and 19 protons and neutrons (so that means 19-9 = 10 neutrons). The element that has 9 protons is fluorine (symbol F on the periodic table)

This means [tex]^{19}_9X[/tex] would update to [tex]^{19}_9F[/tex]

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