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Nuclei tend to have more neutrons than protons at high mass numbers because:
(1) Neutrons are neutral particles
(2) Neutrons have more mass than protons
(3) More neutrons minimize the coulomb repulsion
(4)Neutrons decrease the binding energy
Ans: Neutrons have more mass than protons
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if the electon in hydrogen atom is exited to n=5 the number of diffrent frequency of radiations which may be exited is
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200 g of water at 30 degrees C is mixed with 20 g of silver at 350 degrees C, what''s the final temp?
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