Respuesta :
A compound is composed of a cation which is positively charged ion and an anion that is the negatively charged ion. In this case, when a compound is formed, an exchange of numbers of charges takes place and here the numbers are same so they cancelled with each other and compound with formula XY is formed.
we take the reaction of Ca and Oxygen here.
Calcium Ca⁺² and O⁻² reacts with each other a compound with formula CaO is formed.
we take the reaction of Ca and Oxygen here.
Calcium Ca⁺² and O⁻² reacts with each other a compound with formula CaO is formed.
The formula for a compound made from [tex]x^{2+}[/tex] and [tex]y^{2-}[/tex] is XY
Further explanation
Compound is anything made by combining several things. Whereas a chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
An oxidation state is a number that assigned to an element in a chemical combination. An oxidation state number represents the number of electrons that an atom can gain, lose, or share when chemically bonding with an atom of another element. A chemical formula identifies each constituent element by chemical symbol and indicates the proportionate number of atoms of each element.
The charges are the oxidation states for each element. To make ionic compounds, the charges lose their signs and cross to the opposite element:
[tex]Na^+ + O^{2-}[/tex] --> [tex]Na_{2}O[/tex]
[tex]Ca^{2+} + Cl^{-}[/tex] --> [tex]CaCl_2 [/tex]
If the charges are = but opposite, the numbers cancel . Therefore
[tex]Na^+ + Cl^{-}[/tex] --> [tex]NaCl [/tex]
[tex]Ca^{2+} + O^{2-}[/tex] --> [tex]CaO[/tex]
Therefore the formula for a compound made from [tex]x^{2+}[/tex] and [tex]y^{2-}[/tex] is XY
Learn more
- Learn more about compound https://brainly.com/question/1775854
- Learn more about chemistry formula https://brainly.com/question/2116651
- Learn more about the oxidation states https://brainly.com/question/1425345
Answer details
Grade: 9
Subject: chemistry
Chapter: formula
Keywords: compound, formula, chemistry, charges, the oxidation states
