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padilas [110]
3 years ago
15

During a medical screening, lung capacity testing is a standard procedure. a. True b. False

Chemistry
1 answer:
Zepler [3.9K]3 years ago
3 0

Yes the answer is false

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Which term best indicates the average mass of an atom of an element?
Firdavs [7]
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Nonmetallic elements form ions by _____ valence electrons to complete their outer shell.
Brums [2.3K]

<u>Answer:</u> Non-metals form ions when they gain electrons.

<u>Explanation:</u>

An ion is formed when an atom looses or gains electron.

  • When an atom looses electrons, it will form a positive ion known as cation.
  • When an atom gains electrons, it will form a negative ion known as anion.

Metals are the elements which have a tendency to loose electrons and thus they form cations. <u>Example:</u> Sodium will loose 1 electron to form Na^+ ion.

Non-metals are the elements which have a tendency to gain electrons and thus they form anions. <u>Example:</u> Fluorine will gain 1 electron to form F^- ion.

Hence, non-metals form ions when they gain electrons.

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