Answer:
A spectator ion refers to a charged atom in a chemical reaction that does not undergo a chemical change.
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Answer:
The International System of Units (SI) is originated in France by frenches and originally was called a metric system of measurements. It provides definitions of various units of measurement such as weight, distance, electric current, temperature, and others which is widely accepted in the different fields of science and technology.
It is the system that is extended and derived from the french metric system of measurement is accepted in 1960 by convention 44 nation of the world to use particular unit of measurement worldwide to avoid confusion.
It has 6 electrons, and 4 valence electrons
Answer:
75
Explanation:
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