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pav-90 [236]
3 years ago
9

What is one use of the mineral gypsum?

Chemistry
1 answer:
Ad libitum [116K]3 years ago
4 0

Answer:

Explanation:

3

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1. write the complete chemical symbol for the ion with 14 protons 15 neutrons and 18 electrons
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Answer:

1.   Si^{-4}

2.  Co^{+2}

Explanation:

An ion is formed when an atom that is said to be neutral gains or losses electrons.

It is thought that a negative ion (anion) is produced as it gains electrons and a positive ion (cation) is formed when it loses an electron.

Atomic number is the total number of protons and electrons in a neutral atom.

From the information

Protons = 14

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Net Charge = no of proton - no of electron

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