Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| number | symbol | name | empirical † | Calculated | van der Waals | Covalent (single bond) | Covalent (triple bond) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | H | hydrogen | 25 | 53 | 120 | 38 | no data |
| 2.0 | He | helium | no data | 31 | 140 | 32 | no data |
| 3.0 | Li | lithium | 145 | 167 | 182 | 134 | no data |
| 4.0 | Be | beryllium | 105 | 112 | 153 a | 90 | 85 |
| 5.0 | B | boron | 85 | 87 | 192 a | 82 | 73 |
| 6.0 | C | carbon | 70 | 67 | 170 | 77 | 60 |
| 7.0 | N | nitrogen | 65 | 56 | 155 | 75 | 54 |
| 8.0 | O | oxygen | 60 | 48 | 152 | 73 | 53 |
| 9.0 | F | fluorine | 50 | 42 | 147 | 71 | 53 |
| 10.0 | Ne | neon | no data | 38 | 154 | 69 | no data |
| 11.0 | Na | sodium | 180 | 190 | 227 | 154 | no data |
| 12.0 | Mg | magnesium | 150 | 145 | 173 | 130 | 127 |
| 13.0 | Al | aluminium | 125 | 118 | 184 a | 118 | 111 |
| 14.0 | Si | silicon | 110 | 111 | 210 | 111 | 102 |
| 15.0 | P | phosphorus | 100 | 98 | 180 | 106 | 94 |
| 16.0 | S | sulfur | 100 | 88 | 180 | 102 | 95 |
| 17.0 | Cl | chlorine | 100 | 79 | 175 | 99 | 93 |
| 18.0 | Ar | argon | 71 | 71 | 188 | 97 | 96 |
| 19.0 | K | potassium | 220 | 243 | 275 | 196 | no data |
| 20.0 | Ca | calcium | 180 | 194 | 231 a | 174 | 133 |
| 21.0 | Sc | scandium | 160 | 184 | 211 a | 144 | 114 |
| 22.0 | Ti | titanium | 140 | 176 | no data | 136 | 108 |
| 23.0 | V | vanadium | 135 | 171 | no data | 125 | 106 |
| 24.0 | Cr | chromium | 140 | 166 | no data | 127 | 103 |
| 25.0 | Mn | manganese | 140 | 161 | no data | 139 | 103 |
| 26.0 | Fe | iron | 140 | 156 | no data | 125 | 102 |
| 27.0 | Co | cobalt | 135 | 152 | no data | 126 | 96 |
| 28.0 | Ni | nickel | 135 | 149 | 163 | 121 | 101 |
| 29.0 | Cu | copper | 135 | 145 | 140 | 138 | 120 |
| 30.0 | Zn | zinc | 135 | 142 | 139 | 131 | no data |
| 31.0 | Ga | gallium | 130 | 136 | 187 | 126 | 121 |
| 32.0 | Ge | germanium | 125 | 125 | 211 a | 122 | 114 |
| 33.0 | As | arsenic | 115 | 114 | 185 | 119 | 106 |
| 34.0 | Se | selenium | 115 | 103 | 190 | 116 | 107 |
| 35.0 | Br | bromine | 115 | 94 | 185 | 114 | 110 |
| 36.0 | Kr | krypton | no data | 88 | 202 | 110 | 108 |
| 37.0 | Rb | rubidium | 235 | 265 | 303 a | 211 | no data |
| 38.0 | Sr | strontium | 200 | 219 | 249 a | 192 | 139 |
| 39.0 | Y | yttrium | 180 | 212 | no data | 162 | 124 |
| 40.0 | Zr | zirconium | 155 | 206 | no data | 148 | 121 |
| 41.0 | Nb | niobium | 145 | 198 | no data | 137 | 116 |
| 42.0 | Mo | molybdenum | 145 | 190 | no data | 145 | 113 |
| 43.0 | Tc | technetium | 135 | 183 | no data | 156 | 110 |
| 44.0 | Ru | ruthenium | 130 | 178 | no data | 126 | 103 |
| 45.0 | Rh | rhodium | 135 | 173 | no data | 135 | 106 |
| 46.0 | Pd | palladium | 140 | 169 | 163 | 131 | 112 |
| 47.0 | Ag | silver | 160 | 165 | 172 | 153 | 137 |
| 48.0 | Cd | cadmium | 155 | 161 | 158 | 148 | no data |
| 49.0 | In | indium | 155 | 156 | 193 | 144 | 146 |
| 50.0 | Sn | tin | 145 | 145 | 217 | 141 | 132 |
| 51.0 | Sb | antimony | 145 | 133 | 206 a | 138 | 127 |
| 52.0 | Te | tellurium | 140 | 123 | 206 | 135 | 121 |
| 53.0 | I | iodine | 140 | 115 | 198 | 133 | 125 |
| 54.0 | Xe | xenon | no data | 108 | 216 | 130 | 122 |
| 55.0 | Cs | caesium | 260 | 298 | 343 a | 225 | no data |
| 56.0 | Ba | barium | 215 | 253 | 268 a | 198 | 149 |
| 57.0 | La | lanthanum | 195 | no data | no data | 169 | 139 |
| 58.0 | Ce | cerium | 185 | no data | no data | no data | 131 |
| 59.0 | Pr | praseodymium | 185 | 247 | no data | no data | 128 |
| 60.0 | Nd | neodymium | 185 | 206 | no data | no data | no data |
| 61.0 | Pm | promethium | 185 | 205 | no data | no data | no data |
| 62.0 | Sm | samarium | 185 | 238 | no data | no data | no data |
| 63.0 | Eu | europium | 185 | 231 | no data | no data | no data |
| 64.0 | Gd | gadolinium | 180 | 233 | no data | no data | 132 |
| 65.0 | Tb | terbium | 175 | 225 | no data | no data | no data |
| 66.0 | Dy | dysprosium | 175 | 228 | no data | no data | no data |
| 67.0 | Ho | holmium | 175 | no data | no data | no data | no data |
| 68.0 | Er | erbium | 175 | 226 | no data | no data | no data |
| 69.0 | Tm | thulium | 175 | 222 | no data | no data | no data |
| 70.0 | Yb | ytterbium | 175 | 222 | no data | no data | no data |
| 71.0 | Lu | lutetium | 175 | 217 | no data | 160 | 131 |
| 72.0 | Hf | hafnium | 155 | 208 | no data | 150 | 122 |
| 73.0 | Ta | tantalum | 145 | 200 | no data | 138 | 119 |
| 74.0 | W | tungsten | 135 | 193 | no data | 146 | 115 |
| 75.0 | Re | rhenium | 135 | 188 | no data | 159 | 110 |
| 76.0 | Os | osmium | 130 | 185 | no data | 128 | 109 |
| 77.0 | Ir | iridium | 135 | 180 | no data | 137 | 107 |
| 78.0 | Pt | platinum | 135 | 177 | 175 | 128 | 110 |
| 79.0 | Au | gold | 135 | 174 | 166 | 144 | 123 |
| 80.0 | Hg | mercury | 150 | 171 | 155 | 149 | no data |
| 81.0 | Tl | thallium | 190 | 156 | 196 | 148 | 150 |
| 82.0 | Pb | lead | 180 | 154 | 202 | 147 | 137 |
| 83.0 | Bi | bismuth | 160 | 143 | 207 a | 146 | 135 |
| 84.0 | Po | polonium | 190 | 135 | 197 a | no data | 129 |
| 85.0 | At | astatine | no data | no data | 202 a | no data | 138 |
| 86.0 | Rn | radon | no data | 120 | 220 a | 145 | 133 |
| 87.0 | Fr | francium | no data | no data | 348 a | no data | no data |
| 88.0 | Ra | radium | 215 | no data | 283 a | no data | 159 |
| 89.0 | Ac | actinium | 195 | no data | no data | no data | 140 |
| 90.0 | Th | thorium | 180 | no data | no data | no data | 136 |
| 91.0 | Pa | protactinium | 180 | no data | no data | no data | 129 |
| 92.0 | U | uranium | 175 | no data | 186 | no data | 118 |
| 93.0 | Np | neptunium | 175 | no data | no data | no data | 116 |
| 94.0 | Pu | plutonium | 175 | no data | no data | no data | no data |
| 95.0 | Am | americium | 175 | no data | no data | no data | no data |
| 96.0 | Cm | curium | no data | no data | no data | no data | no data |
| 97.0 | Bk | berkelium | no data | no data | no data | no data | no data |
| 98.0 | Cf | californium | no data | no data | no data | no data | no data |
| 99.0 | Es | einsteinium | no data | no data | no data | no data | no data |
| 100.0 | Fm | fermium | no data | no data | no data | no data | no data |
| 101.0 | Md | mendelevium | no data | no data | no data | no data | no data |
| 102.0 | No | nobelium | no data | no data | no data | no data | no data |
| 103.0 | Lr | lawrencium | no data | no data | no data | no data | no data |
| 104.0 | Rf | rutherfordium | no data | no data | no data | no data | 131 |
| 105.0 | Db | dubnium | no data | no data | no data | no data | 126 |
| 106.0 | Sg | seaborgium | no data | no data | no data | no data | 121 |
| 107.0 | Bh | bohrium | no data | no data | no data | no data | 119 |
| 108.0 | Hs | hassium | no data | no data | no data | no data | 118 |
| 109.0 | Mt | meitnerium | no data | no data | no data | no data | 113 |
| 110.0 | Ds | darmstadtium | no data | no data | no data | no data | 112 |
| 111.0 | Rg | roentgenium | no data | no data | no data | no data | 118 |
| 112.0 | Cn | copernicium | no data | no data | no data | no data | 130 |
| 113.0 | Uut | ununtrium | no data | no data | no data | no data | no data |
| 114.0 | Fl | flerovium | no data | no data | no data | no data | no data |
| 115.0 | Uup | ununpentium | no data | no data | no data | no data | no data |
| 116.0 | Lv | livermorium | no data | no data | no data | no data | no data |
| 117.0 | Uus | ununseptium | no data | no data | no data | no data | no data |
| 118.0 | Uuo | ununoctium | no data | no data | no data | no data | no data |
Question:
What is the symbol of the element with an empirical t of 190 and a calculated value of 135?
Answer:
Po