QUESTION 7 When hydrogen atoms fuse to form helium, the mass of helium is greate
ID: 296245 • Letter: Q
Question
QUESTION 7
When hydrogen atoms fuse to form helium,
the mass of helium is greater than the hydrogen atoms
the mass of helium is less than the hydrogen atoms
the mass of helium and hydrogen has to be the same due to the law of conservation of mass
nuclear fission is said to occur
A.the mass of helium is greater than the hydrogen atoms
B.the mass of helium is less than the hydrogen atoms
C.the mass of helium and hydrogen has to be the same due to the law of conservation of mass
D.nuclear fission is said to occur
Explanation / Answer
Hydrogen atoms fuse to form helium so, the mass of helium is greater than the hydrogen atoms. Because hydrogen atom has 1 proton and no neutrons. So its mass is 1 amu. But helium atoms have two protons and two electrons and 2 neutrons. Therefore, the mass is around 4 amu.
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