If a New Force Were Discovered with a Range on the Order

Short Answer

If a new force were discovered with a range on the order of $10 ^ { - 18 } \mathrm {~m}$ , predict the approximate mass of the exchange particle. $\left( c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)$