Природната платина (78Pt) се состои од пет стабилни изотопи (192Pt, 194Pt, 195Pt, 196Pt, 19 Pt) и еден многу долговечен (време на полураспад 4,83×10 11 години) радиоизотоп (190Pt). Исто така, познати се 34 вештачки радиоизотопи, од кои најдолготрајниот е 193Pt со време на полураспад од 50 години. Сите други изотопи имаат време на полураспад под една година, повеќето под еден ден. Сите изотопи на платината се или радиоактивни или набљудувачки стабилни, што значи дека се предвидува дека се радиоактивни, но не е забележано вистинско распаѓање. Платината-195 е најзастапениот изотоп.
Список на изотопите
|-id=Платина-165 | 165Pt | style="text-align:right" | 78 | style="text-align:right" | 87 | 164,99966(43)# | 370(180) μс | α | 161Os | 7/2−#
|-id=Платина-166 | 166Pt | style="text-align:right" | 78 | style="text-align:right" | 88 | 165,99487(32)# | 294(62) μс | α | 162Os | 0+
|-id=Платина-167 | 167Pt | style="text-align:right" | 78 | style="text-align:right" | 89 | 166,99275(33)# | 920(120) μс | α | 163Os | 7/2−#
|-id=Платина-168 | rowspan=2|168Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 90 | rowspan=2|167,98818(16) | rowspan=2|2,02(10) мс | α | 164Os | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ ? | 168Ir |-id=Платина-169 | rowspan=2|169Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 91 | rowspan=2|168,98662(22)# | rowspan=2|6,99(9) мс | α | 165Os | rowspan=2|(7/2−) | rowspan=2| | rowspan=2| |- | β+ ? | 169Ir |-id=Платина-170 | rowspan=2|170Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 92 | rowspan=2|169,982502(20) | rowspan=2|13,93(16) мс | α | 166Os | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ ? | 170Ir |-id=Платина-171 | rowspan=2|171Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 93 | rowspan=2|170,981249(87) | rowspan=2|45,5(25) мс | α (86%) | 167Os | rowspan=2|7/2− | rowspan=2| | rowspan=2| |- | β+ (14%) | 171Ir |-id=Платина-171m | style="text-indent:1em" | 171mPt | colspan=3 style="text-indent:2em" | 412,6(10) keV | 901(9) нс | IT | 171Pt | 13/2+
|-id=Платина-172 | rowspan=2|172Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 94 | rowspan=2|171,977341(11) | rowspan=2|97,6(13) мс | α (96%) | 168Os | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (4%) | 172Ir |-id=Платина-173 | rowspan=2|173Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 95 | rowspan=2|172,976450(68) | rowspan=2|382(2) мс | α (86%) | 169Os | rowspan=2|(5/2−) | rowspan=2| | rowspan=2| |- | β+ (14%) | 173Ir |-id=Платина-174 | rowspan=2|174Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 96 | rowspan=2|173,972820(11) | rowspan=2|862(8) мс | α (74,9%) | 170Os | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β+ (25,1%) | 174Ir |-id=Платина-175 | rowspan=2|175Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 97 | rowspan=2|174,972401(20) | rowspan=2|2,43(4) с | α (64%) | 171Os | rowspan=2|(7/2−) | rowspan=2| | rowspan=2| |- | β+ (36%) | 175Ir |-id=Платина-176 | rowspan=2|176Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 98 | rowspan=2|175,968938(14) | rowspan=2|6,33(15) с | β+ (60%) | 176Ir | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | α (40%) | 172Os |-id=Платина-177 | rowspan=2|177Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 99 | rowspan=2|176,968470(16) | rowspan=2|10,0(04) с | β+ (94,3%) | 177Ir | rowspan=2|5/2− | rowspan=2| | rowspan=2| |- | α (5,7%) | 173Os |-id=Платина-177m | style="text-indent:1em" | 177mPt | colspan=3 style="text-indent:2em" | 147,5(4) keV | 2,35(4) μс | IT | 177Pt | 1/2−
|-id=Платина-178 | rowspan=2|178Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 100 | rowspan=2|177,965649(11) | rowspan=2|20,7(7) с | β+ (92,3%) | 178Ir | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | α (7,7%) | 174Os |-id=Платина-179 | rowspan=2|179Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 101 | rowspan=2|178,9653588(86) | rowspan=2|21,2(4) с | β+ (99,76%) | 179Ir | rowspan=2|1/2− | rowspan=2| | rowspan=2| |- | α (0,24%) | 175Os |-id=Платина-180 | rowspan=2|180Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 102 | rowspan=2|179,963038(11) | rowspan=2|56(3) с | β+ (99,48%) | 180Ir | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | α (0,52%) | 176Os |-id=Платина-181 | rowspan=2|181Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 103 | rowspan=2|180,963090(15) | rowspan=2|52,0(22) с | β+ (99,93%) | 181Ir | rowspan=2|1/2− | rowspan=2| | rowspan=2| |- | α (0,074%) | 177Os |-id=Платина-181m | style="text-indent:1em" | 181mPt | colspan=3 style="text-indent:2em" | 116,65(8) keV | >300 нс | IT | 181Pt | 7/2−
|-id=Платина-182 | rowspan=2|182Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 104 | rowspan=2|181,961172(14) | rowspan=2|2,67(12) мин | β+ (99,962%) | 182Ir | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | α (0,038%) | 178Os |-id=Платина-183 | rowspan=2|183Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 105 | rowspan=2|182,961596(15) | rowspan=2|6,5(10) мин | β+ (99,99%) | 183Ir | rowspan=2|1/2− | rowspan=2| | rowspan=2| |- | α (0,0096%) | 179Os |-id=Платина-183m1 | rowspan=3 style="text-indent:1em" | 183m1Pt | rowspan=3 colspan=3 style="text-indent:2em" | 34,74(7) keV | rowspan=3|43(5) с | β+ (96,9%) | 183Ir | rowspan=3|7/2− | rowspan=3| | rowspan=3| |- | IT (3,1%) | 183Pt |- | α ? | 179Os |-id=Платина-183m2 | style="text-indent:1em" | 183m2Pt | colspan=3 style="text-indent:2em" | 195,90(10) keV | >150 нс | IT | 183Pt | 9/2+
|-id=Платина-184 | rowspan=2|184Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 106 | rowspan=2|183,959922(16) | rowspan=2|17,3(2) мин | β+ | 184Ir | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | α (0,0017%) | 180Os |-id=Платина-184m | style="text-indent:1em" | 184mPt | colspan=3 style="text-indent:2em" | 1840,3(8) keV | 1,01(5) мс | IT | 184Pt | 8−
|-id=Платина-185 | rowspan=2|185Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 107 | rowspan=2|184,960614(28) | rowspan=2|70,9(24) мин | β+ | 185Ir | rowspan=2|9/2+ | rowspan=2| | rowspan=2| |- | α (0,0050%) | 181Os |-id=Платина-185m1 | style="text-indent:1em" | 185m1Pt | colspan=3 style="text-indent:2em" | 103,41(5) keV | 33,0(8) мин | β+ | 185Ir | 1/2−
|-id=Платина-185m2 | style="text-indent:1em" | 185m2Pt | colspan=3 style="text-indent:2em" | 200,89(4) keV | 728(20) нс | IT | 185Pt | 5/2−
|-id=Платина-186 | rowspan=2|186Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 108 | rowspan=2|185,959351(23) | rowspan=2|2,08(5) ч | β+ | 186Ir | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | α (1,4×10−4%) | 182Os |-id=Платина-187 | 187Pt | style="text-align:right" | 78 | style="text-align:right" | 109 | 186,960617(26) | 2,35(3) ч | β+ | 187Ir | 3/2−
|-id=Платина-187m | style="text-indent:1em" | 187mPt | colspan=3 style="text-indent:2em" | 174,38(22) keV | 311(15) μс | IT | 187Pt | 11/2+
|-id=Платина-188 | rowspan=2|188Pt | rowspan=2 style="text-align:right" | 78 | rowspan=2 style="text-align:right" | 110 | rowspan=2|187,9593975(57) | rowspan=2|10,16(18) д | EC | 188Ir | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | α (2,6×10−5%) | 184Os |-id=Платина-189 | 189Pt | style="text-align:right" | 78 | style="text-align:right" | 111 | 188,960848(11) | 10,87(12) ч | β+ | 189Ir | 3/2−
|-id=Платина-189m1 | style="text-indent:1em" | 189m1Pt | colspan=3 style="text-indent:2em" | 172,79(6) keV | 464(25) нс | IT | 189Pt | 9/2−
|-id=Платина-189m2 | style="text-indent:1em" | 189m2Pt | colspan=3 style="text-indent:2em" | 191,6(4) keV | 143(5) μс | IT | 189Pt | (13/2+)
|-id=Платина-190 | 190Pt | style="text-align:right" | 78 | style="text-align:right" | 112 | 189,95994982(71) | 4,83(3)×1011 г | αТеоретски претрпува β+β+-распад до 190Os | 186Os | 0+ | 1,2(2)×10−4 | |-id=Платина-191 | 191Pt | style="text-align:right" | 78 | style="text-align:right" | 113 | 190,9616763(44) | 2,83(2) д | EC | 191Ir | 3/2−
|-id=Платина-191m1 | style="text-indent:1em" | 191m1Pt | colspan=3 style="text-indent:2em" | 100,663(20) keV | >1 μс | IT | 191Pt | 9/2−
|-id=Платина-191m2 | style="text-indent:1em" | 191m2Pt | colspan=3 style="text-indent:2em" | 149,035(22) keV | 95(5) μс | IT | 191Pt | 13/2+
|-id=Платина-192 | 192Pt | style="text-align:right" | 78 | style="text-align:right" | 114 | 191,9610427(28) | colspan=3 align=center|Опсервациски стабилен Се верува дека подлежи на α-распад до 188Os со време на полураспад од преку 6,0×1016 години | 0+ | 0,00782(24) | |-id=Платина-192m | style="text-indent:1em" | 192mPt | colspan=3 style="text-indent:2em" | 2172,37(13) keV | 272(23) нс | IT | 192Pt | 10−
|-id=Платина-193 | 193Pt | style="text-align:right" | 78 | style="text-align:right" | 115 | 192,9629845(15) | 50(6) г | EC | 193Ir | 1/2−
|-id=Платина-193m | style="text-indent:1em" | 193mPt | colspan=3 style="text-indent:2em" | 149,78(4) keV | 4,33(3) д | IT | 193Pt | 13/2+
|-id=Платина-194 | 194Pt | style="text-align:right" | 78 | style="text-align:right" | 116 | 193,96268350(53) | colspan=3 align=center|Опсервациски стабиленСе верува дека подлежи на α-распад до 190Os | 0+ | 0,3286(41) | |-id=Платина-195 | 195Pt | style="text-align:right" | 78 | style="text-align:right" | 117 | 194,96479433(54) | colspan=3 align=center|Опсервациски стабилен Се верува дека подлежи на α-распад до 191Os со време на полураспад од преку 6,3×1018 години | 1/2− | 0,3378(24) | |-id=Платина-195m | style="text-indent:1em" | 195mPt | colspan=3 style="text-indent:2em" | 259,077(23) keV | 4,010(5) д | IT | 195Pt | 13/2+
|-id=Платина-196 | 196Pt | style="text-align:right" | 78 | style="text-align:right" | 118 | 195,96495465(55) | colspan=3 align=center|Опсервациски стабиленСе верува дека подлежи на α-распад до 192Os | 0+ | 0,2521(34) | |-id=Платина-197 | 197Pt | style="text-align:right" | 78 | style="text-align:right" | 119 | 196,96734303(58) | 19,8915(19) ч | β− | 197Au | 1/2−
|-id=Платина-197m | rowspan=2 style="text-indent:1em" | 197mPt | rowspan=2 colspan=3 style="text-indent:2em" | 399,59(20) keV | rowspan=2|95,41(18) мин | IT (96,7%) | 197Pt | rowspan=2|13/2+ | rowspan=2| | rowspan=2| |- | β− (3,3%) | 197Au |-id=Платина-198 | 198Pt | style="text-align:right" | 78 | style="text-align:right" | 120 | 197,9678967(23) | colspan=3 align=center|Опсервациски стабилен Се верува дека подлежи на α-распад до 194Os или двоен β−-распад до 198Hg со време на полураспад од преку 3,20×1014 години | 0+ | 0,0734(13) | |-id=Платина-199 | 199Pt | style="text-align:right" | 78 | style="text-align:right" | 121 | 198,9705970(23) | 30,80(21) мин | β− | 199Au | 5/2−
|-id=Платина-199m | style="text-indent:1em" | 199mPt | colspan=3 style="text-indent:2em" | 424(2) keV | 13,48(16) с | IT | 199Pt | 13/2+
|-id=Платина-200 | 200Pt | style="text-align:right" | 78 | style="text-align:right" | 122 | 199,971445(22) | 12,6(3) ч | β− | 200Au | 0+
|-id=Платина-201 | 201Pt | style="text-align:right" | 78 | style="text-align:right" | 123 | 200,974513(54) | 2,5(1) мин | β− | 201Au | (5/2−)
|-id=Платина-202 | 202Pt | style="text-align:right" | 78 | style="text-align:right" | 124 | 201,975639(27) | 44(15) ч | β− | 202Au | 0+
|-id=Платина-202m | style="text-indent:1em" | 202mPt | colspan=3 style="text-indent:2em" | 1788,5(4) keV | 141(7) μс | IT | 202Pt | (7−)
|-id=Платина-203 | 203Pt | style="text-align:right" | 78 | style="text-align:right" | 125 | 202,97906(22)# | 22(4) с | β− | 203Au | (1/2−)
|-id=Платина-203m1 | rowspan=2 style="text-indent:1em" | 203m1Pt | rowspan=2 colspan=3 style="text-indent:2em" | 1367(3)# keV | rowspan=2 | 12(5) с | β− | 203Au