(1) H-1 and He-3 (2) H-2 and He-4 (3) H-3 and He-3 (4) H-3 and He-4
the correct answer is (4) but how?
2007-06-17 14:50:45 · 3 answers · asked by Desilicious 1 in Science & Mathematics ➔ Chemistry
Hydrogen 2 has two neutrons, and He-4 has two neutrons.
2007-06-17 14:53:47 · answer #1 · answered by Steve C 7 · 1⤊ 0⤋
H-1 has no neutrons (1 proton = atomic wt. of 1)
H-2 has 1 neutron (plus 1 proton = atomic wt. of 2)
H-3 has 2 neutrons (plus 1 proton = atomic wt. of 3)
He-3 has 1 neutron (plus 2 protons = atomic wt. of 3)
He-4 has 2 neutrons (plus 2 protons = atomic wt. of 4)
From this chart, you can see that H-3 and He-4 have the same number of neutrons.
2007-06-17 22:52:53 · answer #2 · answered by Katy D 4 · 0⤊ 0⤋
the answer is H-3 and He-4
Neutrons= mass # - Atomic #
2007-06-17 21:53:37 · answer #3 · answered by Awaitng hurricane season 3 · 0⤊ 0⤋