Predict the empirical formulas of the ionic compounds formed from the following pairs of element. Name each compoun. A. Li and N.
B. GA and O.
C. Rb and Cl.
D. Ba and S.

A.   : Lithium (I) nitride.

B. : Galium (III) oxide.

C. : Rubidium (I) chloride.

D. : Barium (II) sulphide.

Explanation:

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.  

A. Here metal Li is having an oxidation state of +1 called as cation and is an anion with oxidation state of -3. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral . The name of the compound is Lithium (I) nitride.

B. Here metal Ga is having an oxidation state of +3 called as cation and is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral . The name of the compound is Galium (III) oxide.

C. Here metal Rb is having an oxidation state of +1 called as cation and is an anion with oxidation state of -1. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral . The name of the compound is Rubidium (I) chloride.

D. Here metal Ba is having an oxidation state of +2 called as cation and is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral . The name of the compound is Barium (II) sulphide.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

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tony (lordcaos066)

b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.