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The atomic number of an element represents:
(1) Number of neutrons in the nucleus
(2) Number of protons in the nucleus
(3)Atomic weight of element
(4)Valency of element
Ans: Number of protons in the nucleus
A 2.5 kg rock is located on the Earth''s surface. If the mass of the moon is 7.4 E 22 kg, and the separation distance between the center of the rock and the center of the moon is 3
what is ether medium
hi, can you help me with sage homwork about physics
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