3 years ago

Given the atomic

Chemistry

2 answers:

e-lub [12.9K]3 years ago

8 0

<h3>Answer: Choice A) fluorine</h3>

Explanation:

The notation $^{19}_9X$ 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 $^{19}_9X$ would update to $^{19}_9F$

Ivan3 years ago

6 0

Answer:

Explanation:

its electron arrangements is 9

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