MolSynapsequestion bank

MolSynapse / Question bank / Basic Inorganic Nomenclature and Oxidation Number / Formula from name and name from formula

NEET levelSingle correct optionDifficulty 1 of 3bn166

Which is the correct formula of calcium phosphate?

A $Ca X_{3} (PO X_{4}) X_{2}$
B $Ca X_{3} (PO X_{3}) X_{2}$
C $CaPO X_{4}$
D $Ca X_{2} (PO X_{4}) X_{3}$

Answer: A

Ca is 2+ and phosphate is

PO X_{4} X^{3 -}

. Charge balance needs

3 \times (+ 2) = + 6

and

2 \times (- 3) = - 6

, so three Ca and two phosphate:

Ca X_{3} (PO X_{4}) X_{2}

.

Practice Basic Inorganic Nomenclature and Oxidation Number More on Formula from name and name from formula

Previous questionNext question

More questions on Formula from name and name from formula

What is the name of the anion HSO3- (hydrogen- prefix for acid salts)? NEET level
What is the formula of calcium hypochlorite (hypochlorite is ClO-)? NEET level
Which is the formula of tin(IV) sulfide? JEE Main level
What is the name of Na2O2 (it contains the O2^2- ion)? NEET level
Using Greek multiplicative prefixes for binary compounds of non-metals, name Cl2O7. NEET level
Which is the correct formula of ammonium dichromate? NEET level