What is formed when 2 or more atoms are held together by covalent bonds?
1 answer:
The group of atoms held together by covalent bonds is called a molecule
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Answer:
20.0928.
Explanation:
The average atomic mass is (90 * 19.992 + 10* 21) / 100
= 20.0928.
The correct answer is A. Alkali metals.
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LiNO3; nitrate has a charge of -1, and lithium has a charge of +1
Answer:
The number of electrons in the outer energy level
Explanation:
Probably sodium Na because it has a similar atomic mass and number
