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Formula from name and name from formula

55 questions on Formula from name and name from formula from the Basic Inorganic Nomenclature and Oxidation Number chapter: 11 NEET level, 21 JEE Main, 23 JEE Advanced. Each one opens with its answer and solution.

Practice this topic All Basic Inorganic Nomenclature and Oxidation Number topics

Select all pairs in which the formula matches the name. JEE Main level
Which is the formula of chromium(III) sulfate? JEE Main level
Match the nitrogen compounds. List I: P NH2OH, Q N2H4, R HN3, S N2O. List II: 1 hydrazine, 2 hydroxylamine, 3 hydrazoic acid, 4 dinitrogen monoxide. JEE Main level
Select all compounds, identified by name, in which sulfur has oxidation number +6 (use -1 for O in the peroxo group). JEE Advanced level
Select all pairs in which the formula matches the name. JEE Main level
Red lead is named dilead(II) lead(IV) oxide. Deduce its formula and the average oxidation number of lead. JEE Advanced level
Which formula-name pair is correct? JEE Main level
Select all hydrates, identified by name, whose formula unit contains exactly 9 oxygen atoms. Take each name literally and deduce the formula from it, whether or... JEE Advanced level
Dichlorine heptoxide is the anhydride of an oxyacid. What is the oxidation number of Cl in it, and what is the name of the acid formed with water? JEE Advanced level
Tricarbon dioxide (carbon suboxide) has the formula deduced from its name, with O as -2. Find the average oxidation number of carbon in it. Give the answer to t... JEE Advanced level
Prussian blue is iron(III) hexacyanoferrate(II). Which formula is correct? JEE Advanced level
Select all compounds, identified by name or formula, in which the central metal has oxidation number +6 (in CrO5 take one oxo O and two O2^2- groups). JEE Advanced level
Which is the correct name for CuSO4.5H2O in IUPAC style with Stock notation and a Greek prefix for the water of hydration? JEE Main level
Ammonium hexafluorosilicate contains NH4+ and [SiF6]^2-. How many atoms are present in one formula unit, and what is the oxidation number of Si? JEE Advanced level
Which is the correct formula of calcium phosphate (phosphate is PO4^3-)? NEET level
Which is the formula of sodium hexafluorosilicate? JEE Main level
Sodium peroxodisulfate has the peroxodisulfate ion S2O8^2-, which contains one O-O linkage (those two O are -1, the other six O are -2). Find the sum of the oxi... JEE Advanced level
Which is the formula of potassium hexacyanoferrate(II)? JEE Main level
Which is the formula of sodium hydrogencarbonate? NEET level
Ammonium iron(II) sulfate hexahydrate has one Fe^2+, ammonium ions and sulfate ions in the smallest whole-number ratio that is neutral. How many hydrogen atoms ... JEE Advanced level
Which is the formula of potassium ozonide? JEE Main level
What is the formula of ammonium dichromate (NH4+, Cr2O7^2-)? NEET level
Select all anions, identified by name, in which the central atom has oxidation number +5. JEE Advanced level
Sodium pentacyanonitrosylferrate(II) contains the complex ion with five CN-, one nitrosyl taken as NO+, and iron in the +2 state. Which is its formula? JEE Advanced level
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
Which is the correct formula of calcium phosphate? NEET 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
What is the Stock name of FeCl3? NEET level
What is the oxidation number of Cr in K2Cr2O7? NEET level
Assertion (A): The oxidation number of oxygen in KO2 is -1. Reason (R): KO2 contains the superoxide ion O2^-. Choose the correct option. JEE Main level
Using Greek prefixes, the correct name of N2O is JEE Main level
What is the Stock name of PbO2 (oxide ion O^2-, no peroxo link)? JEE Main level
Which is the formula of potassium hexacyanidoferrate(II)? JEE Main level
Match the compound (Column I) with the oxidation number of oxygen in it (Column II). Use O = -1 in peroxide, -1/2 in superoxide and F = -1. Column I: P Na2O2; Q... JEE Main level
The common inorganic name of NaNH2 (containing the NH2^- ion) is JEE Main level
Which formula corresponds to chlorine(IV) oxide? JEE Main level
Magnetite is Fe3O4, with O = -2. Find the AVERAGE oxidation number of Fe in Fe3O4. Give the answer to two decimals. JEE Main level
What is the Stock name of Hg2Cl2 (contains the Hg2^2+ ion)? JEE Main level
Hydrazoic acid is HN3. What is the average oxidation number of N, with H = +1? JEE Main level
Nickel tetracarbonyl, Ni(CO)4 (CO is a neutral ligand), has the systematic name JEE Main level
Convention: O is -1 in a peroxide ion, -1/2 in a superoxide ion, and F is -1. Select ALL compounds in which oxygen has oxidation number -1. JEE Advanced level
Select ALL cases in which the AVERAGE oxidation number of the element named is a non-integer. Use O = -2, H = +1, and count all atoms of that element in the for... JEE Advanced level
Take Pb3O4 as the mixed oxide 2PbO.PbO2 and Fe3O4 as FeO.Fe2O3. Select ALL correct statements (O = -2). JEE Advanced level
Select ALL correct name-formula pairs. JEE Advanced level
Use F = -1, O = -2. In bleaching powder CaOCl2 take the structure Ca(OCl)Cl (one hypochlorite and one chloride). Select ALL correct statements. JEE Advanced level
Hydrogen is -1 in metal and boron/aluminium hydrides, and +1 elsewhere; Na and Li are +1, Cl is -1. Select ALL correct statements. JEE Advanced level
Treat NO in nitroprusside as NO+ and CO as neutral. Select ALL correct name-oxidation-state pairs. JEE Advanced level
Match the nitrogen compound (Column I) with the oxidation number of N (average, if more than one N atom; H = +1, O = -2) (Column II). Column I: P N2H4; Q NH2OH;... JEE Advanced level
Arrange the average oxidation number of S in these species in INCREASING order: (i) S2O3^2-, (ii) S4O6^2-, (iii) SO3^2-, (iv) S2O8^2- (one peroxo link, the two ... JEE Advanced level
With O = -2 and F = -1, xenon in which of these compounds has an oxidation number different from the others? JEE Advanced level
Count the peroxo (O-O) linkages: CrO5 (one Cr=O and two peroxo groups bound to Cr), H2SO5 (one peroxo group) and H2S2O8 (one peroxo group). What is the TOTAL nu... JEE Advanced level