Modern inorganic chemistry

INDEX 453

Nitrogen—cont.

properties, 206

reactions, 210-213

tests, 253

Nitronium ion, 234, 240

Nitrosyl

cation, 90, 230

chloride, 231

hydrogensulphate, 299

Nitrous acid, 243

Noble gas hydrates, 356

Nomenclature, 47, 363

Oleum, 302

Orbit, 5

Orbitals, 6, 54^56

hybrid, 55, 58

Orpiment, 209

Oxidation

definitions, 91, 92

state, 95-97

Oxides

acidic, 286, 287

amphoteric, 285

higher, 286

ionic, 89, 187,285

Oxidising agents, tests for, 107, 108

'Oxo' reaction, 405

Oxoacids

anions, 43, 44

strength of, 88

Oxonium ion, 85

Oxygen

allotropes, 262-264

hydrides, 269-282

occurrence and extraction, 260

properties, 257-259

reactions, 266-268

uses, 268

Oxygen difluoride, 324, 334

Ozone, 262-264

Ozonides, 264

Paramagnetism, 229, 262, 366, 422

Pauling, 50

4 Peptisation,^193
Perborate', 149
Periodic table, i
Peroxides, 130
Peroxodisulphate, 304, 325, 385
Phosphates, 246, 247
Phosphine, 225, 226
Phosphinic acid, 244

Phosphonic acid, 245

Phosphoric acids, 245-247

Phosphorus

allotropes, 209

halides, 249-252

hydrides, 225-227

occurrence and extraction, 208, 209

oxides, 244

oxoacids, 244

pentachloride, 251

pentafluoride, 40, 251

properties, 206

reactions, 210-213

tests, 253, 254

Photochemical reaction, 321

Photography, 428, 429

Plastics, 189

Platinum(II) chloride, 174

Plumbane, 177

Plutonium, 444

Polonium, 262, 267

hydride, 284

Polyhalides, 346

Polymetallic cations, 437

Polysulphides, 267, 284

Potassium

biological importance, 124

carbonate, 132,

compounds, 126-133

hydroxide, 130

physical properties, 120

reactions, 125, 126

superoxide, 123, 130

tests for, 136

uses, 123

Potentiometric titrations, 104-107

Pyrolusite, 384

uses, 388

Quantum number, 5

Quartz, 186

Quicklime, 133

Radon

isolation, 355

properties, 353, 354

uses, 357

Realgar, 209

Red lead, 195

Redox potentials, 97-104

effect of ligand, 101, 102, 367, 368

effect of pH, 101, 102

uses of. 102-105