complete the following table: some polyatomic ions name chemical formula hydronium cation phosphate anion carbonate anion cyanide anion

Question

complete the following table: some polyatomic ions name chemical formula hydronium cation  phosphate anion  carbonate anion  cyanide anion

Accepted Answer

# Explanation:
## Step1: Recall hydronium cation formula
The hydronium cation is formed when a water - molecule accepts a proton. Its chemical formula is $H_3O^+$.
## Step2: Recall phosphate anion formula
The phosphate anion has a charge of - 3 and consists of one phosphorus atom and four oxygen atoms. Its chemical formula is $PO_{4}^{3 - }$.
## Step3: Recall carbonate anion formula
The carbonate anion has a charge of - 2 and consists of one carbon atom and three oxygen atoms. Its chemical formula is $CO_{3}^{2 - }$.
## Step4: Recall cyanide anion formula
The cyanide anion has a charge of - 1 and consists of one carbon atom and one nitrogen atom. Its chemical formula is $CN^-$.

# Answer:
| name | chemical formula |
|--|--|
| hydronium cation | $H_3O^+$ |
| phosphate anion | $PO_{4}^{3 - }$ |
| carbonate anion | $CO_{3}^{2 - }$ |
| cyanide anion | $CN^-$ |

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Question

Explanation:

Step1: Recall hydronium cation formula

Step2: Recall phosphate anion formula

Step3: Recall carbonate anion formula

Step4: Recall cyanide anion formula

Answer:

name	chemical formula
phosphate anion	$PO_{4}^{3 - }$
carbonate anion	$CO_{3}^{2 - }$
cyanide anion	$CN^-$