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Q: When can a compound be treated like element when balancing chemical equations?
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When can a compound be treated as an element when balancing chemical equations?

You can treat a polyatomic ion as an element when balancing equations. The following example involves the polyatomic ion NO3-. Notice that the entire polyatomic ion is placed in parentheses and given its own subscript. 2Al(s) + 3Mg(NO3)2(aq) --> 2Al(NO3)3(aq) + 3Mg(s)


Magnesium is a compound?

Magnesium is a chemical element, not a compound.


Is copper an compound or element?

Copper is a chemical element. It can be a compound but copper is usually known as a chemical element.


What is francium a compound or element?

Francium is a GROUP 1 metallic ELEMENT. It is a the bottom of Group 1 . Its partner elements in the Group are, lithium, sodium, potassium, rubidium, & caesium. They all react with water with increasing violence. to the point of explositivity. Francium is also Radio-Active, so you will not find it in any school lab. or even industrial labs. It is probably kept in a very special nuclear research lab. under very controlled conditions. It was discovered by Marie Curie, in France, hence its name.


Why is radium called an element and not a chemical compound?

Radium is a chemical element; a compound has a minimum of two chemical elements.


Is radium a compound or a element?

Radium is a chemical element, not a compound.


Is silver an element or compound?

Silver is a metalic chemical element.


How does a subscript in a chemical formula affect balancing chemical equation?

How does a subscript affect the element just before it?


Is sodium compound or salt?

Sodium is a chemical element. Salt is a compound of sodium and chlorine.


Where are subscripts placed in chemical equations?

Right and down the symbol of a chemical element.


Is iodine crystals an element compound or mixture?

Iodine is a chemical element; not a mixture, not a compound.


Is I2 a compound or an element?

I2 is an Element. It is the chemical symbol for molecular iodine.