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Chlorine is used in the making of computers and blood bags, and is found in household...

Chlorine is used in the making of computers and blood bags, and is found in household bleach as well as in the skin of the Ecuadorian tree frog. (a) A chlorine molecule (Cl2) has 34 protons and 34 electrons. What is its charge? (b) A chlorine ion (Cl?) has 17 protons and 18 electrons. What is its charge?

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Answer #1

Cl2 molecule is neutral ie charge is 0

chloride ion Cl-1 has charge =-1

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Answer #2

to find out the charge we follow below instruction

Subtract the number or electrons from the number of protons in an atom as a basic way of calculating the charge of the ion

a)Charge=no of electrons-No of protons

=34-34

=0

The Cl molecule will have no charge, its not an ion because it one atom sharing electrons with another atom and so there is no free electrons

b)we follow the same rule as in first question

so Charge=no of electrons-No of protons

The Cl anion, on the other hand is a single atom, and has one free electron uncanceled by a proton, so the charge is (17-18) = minus 1

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