element types of potassium iodide

potassium iodide | element types

iodine | potassium

Periodic table location

Images

| iodine | potassium atomic symbol | I | K atomic number | 53 | 19 short electronic configuration | [Kr]5s^24d^105p^5 | [Ar]4s^1 Aufbau diagram | 5p 4d 5s | 4s block | p | s group | 17 | 1 period | 5 | 4 atomic mass | 126.90447 u | 39.0983 u half-life | (stable) | (stable)

| iodine | potassium phase at STP | solid | solid melting point | 113.7 °C | 63.38 °C boiling point | 184.3 °C | 759 °C critical temperature | 819 K | 2223 K critical pressure | 11.7 MPa | 16 MPa molar heat of fusion | 7.76 kJ/mol | 2.33 kJ/mol molar heat of vaporization | 20.9 kJ/mol | 76.9 kJ/mol specific heat at STP | 429 J/(kg K) | 757 J/(kg K) (properties at standard conditions)

| iodine | potassium density | 4.94 g/cm^3 | 0.856 g/cm^3 liquid density | | 0.828 g/cm^3 molar volume | 25.69 cm^3/mol | 45.7 cm^3/mol Mohs hardness | | 0.4 (between talc and gypsum) Brinell hardness | | 0.363 MPa bulk modulus | 7.7 GPa | 3.1 GPa shear modulus | | 1.3 GPa sound speed | | 2000 m/s thermal conductivity | 0.449 W/(m K) | 100 W/(m K) (properties at standard conditions)

| iodine | potassium electrical type | insulator | conductor resistivity | 1×10^7 Ω m (ohm meters) | 7×10^-8 Ω m (ohm meters) electrical conductivity | 1×10^-7 S/m (siemens per meter) | 1.4×10^7 S/m (siemens per meter) magnetic type | diamagnetic | paramagnetic volume magnetic susceptibility | -2.22×10^-5 | 5.74×10^-6 mass magnetic susceptibility | -4.5×10^-9 m^3/kg (cubic meters per kilogram) | 6.7×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -1.14×10^-9 m^3/mol (cubic meters per mole) | 2.62×10^-10 m^3/mol (cubic meters per mole) work function | | 2.29 eV (Polycrystalline) threshold frequency | | 5.537×10^14 Hz (hertz) color | (slate gray) | (silver)

| iodine | potassium valence | 7 | 1 electronegativity | 2.66 | 0.82 electron affinity | 295.2 kJ/mol (kilojoules per mole) | 48.4 kJ/mol (kilojoules per mole) first ionization energy | 1008.4 kJ/mol (kilojoules per mole) | 418.8 kJ/mol (kilojoules per mole) ionization energies | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol | 418.8 kJ/mol | 3052 kJ/mol | 4420 kJ/mol | 5877 kJ/mol | 7975 kJ/mol | 9590 kJ/mol | 11343 kJ/mol | 14944 kJ/mol | 16963.7 kJ/mol | 48610 kJ/mol

Reactivity

| iodine | potassium term symbol | ^2P_(3/2) | ^2S_(1/2) atomic radius | 140 pm | 220 pm covalent radius | 139 pm | 203 pm van der Waals radius | 198 pm | 275 pm (electronic ground state properties)

| iodine | potassium universe abundance | 1×10^-7 mass% | 3×10^-4 mass% solar abundance | | 4×10^-4 mass% meteorite abundance | 2.5×10^-5 mass% | 0.07 mass% crust abundance | 4.9×10^-5 mass% | 1.5 mass% ocean abundance | 6×10^-6 mass% | 0.042 mass% human abundance | 2×10^-5 mass% | 0.2 mass% universe molar abundance | 1×10^-9 mol% | 1×10^-5 mol% solar molar abundance | | 9.9×10^-6 mol% meteorite molar abundance | 3×10^-6 mol% | 0.037 mol% ocean molar abundance | 2.9×10^-7 mol% | 0.0066 mol% crust molar abundance | 8×10^-6 mol% | 0.78 mol% human molar abundance | 1×10^-6 mol% | 0.032 mol%

| iodine | potassium half-life | (stable) | (stable) stable isotopes | I-127 (100%) | K-39 (93.2581%) | K-41 (6.7302%) nuclear spin | I-108: 1^+ | I-109: 1/2^+ | I-110: 1^+ | I-111: 5/2^+ | I-112: 1^+ | I-113: 5/2^+ | I-114: 1^+ | I-115: 5/2^+ | I-116: 1^+ | I-117: 5/2^+ | I-118: 2^- | I-119: 5/2^+ | I-120: 2^- | I-121: 5/2^+ | I-122: 1^+ | I-123: 5/2^+ | I-124: 2^- | I-125: 5/2^+ | I-126: 2^- | I-127: 5/2^+ | I-128: 1^+ | I-129: 7/2^+ | I-130: 5^+ | I-131: 7/2^+ | I-132: 4^+ | I-133: 7/2^+ | I-134: 4^+ | I-135: 7/2^+ | I-136: 1^- | I-137: 7/2^+ | I-138: 2^- | I-139: 7/2^+ | I-140: 4^- | I-141: 7/2^+ | I-142: 2^- | I-143: 7/2^+ | I-144: 1^- | K-32: 1^+ | K-33: 3/2^+ | K-34: 1^+ | K-35: 3/2^+ | K-36: 2^+ | K-37: 3/2^+ | K-38: 3^+ | K-39: 3/2^+ | K-40: 4^- | K-41: 3/2^+ | K-42: 2^- | K-43: 3/2^+ | K-44: 2^- | K-45: 3/2^+ | K-46: 2^- | K-47: 1/2^+ | K-48: 2^- | K-49: 3/2^+ | K-52: 2^- | K-53: 3/2^+ | K-54: 2^- | K-55: 3/2^+ unstable isotopes | I-129 (15.7 Myr) | I-125 (59.4 days) | I-126 (12.93 days) | I-131 (8.0252 days) | I-124 (100.2 h) | I-133 (20.8 h) | I-123 (13.2235 h) | I-130 (12.4 h) | I-135 (6.58 h) | I-132 (137.7 min) | I-121 (127.2 min) | I-120 (82 min) | I-134 (52.5 min) | I-128 (24.98 min) | I-119 (19.1 min) | I-118 (13.7 min) | I-122 (218 s) | I-117 (133 s) | I-136 (83.4 s) | I-115 (78 s) | I-137 (24.5 s) | I-113 (6.6 s) | I-138 (6.23 s) | I-112 (3.42 s) | I-116 (2.91 s) | I-111 (2.5 s) | I-139 (2.28 s) | I-114 (2.1 s) | I-140 (860 ms) | I-110 (650 ms) | I-141 (430 ms) | I-142 (200 ms) | I-108 (36 ms) | I-109 (103 µs) | I-144 (300 ns) | I-143 (150 ns) | K-40 (1.248 Gyr) | K-43 (22.3 h) | K-42 (12.321 h) | K-44 (22.13 min) | K-45 (17.81 min) | K-38 (7.637 min) | K-46 (105 s) | K-47 (17.5 s) | K-48 (6.8 s) | K-49 (1.26 s) | K-37 (1.226 s) | K-50 (472 ms) | K-51 (365 ms) | K-36 (342 ms) | K-35 (178 ms) | K-52 (105 ms) | K-53 (30 ms) | K-54 (10 ms) | K-55 (3 ms) | K-34 (25 ns) | K-33 (25 ns) neutron cross-section | 6.2 b | 2.1 b neutron mass absorption | 0.0018 m^2/kg | 0.0018 m^2/kg

| iodine | potassium CAS number | 7553-56-2 | 7440-09-7 PubChem CID number | 807 | 5462222