Yes it is a right triangle because the 2 smaller sides are bigger than the biggest one
I think it would look like this 20:28 or 120:150
4 + (27 - 10)
4 increased by the difference of 27 and 10
It would be 11 + 12 = 23 atomic mass units.
(electrons have about a mass of 5.489×10−4<span> atomic mass units, so their mass would be negligible in this calculation).
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