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pychu [463]
2 years ago
12

What is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons?

Chemistry
2 answers:
RideAnS [48]2 years ago
6 0

Answer:

7

Explanation:

NISA [10]2 years ago
5 0

Answer

<h2>If no of proton is 3</h2><h2 /><h2>Then atomic no. Is3</h2><h2 /><h2>Therefore it is Li</h2><h2 /><h2>Mass no. Of li = 7</h2>

Explanation:

<u>HOPE</u><u> IT</u><u> HELPS</u>

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The elements potassium and sodium have similar chemical properties because they have the same number of valence electrons and form +1 ions.

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