Aluminum atoms have 13 protons in the nucleus and 22 electrons outside the nucleus. Helium atoms have two protons in the nucleus and two electrons outside the nucleus. The majority of the mass of a nitrogen atom is due to its seven electrons. Most of the volume of hydrogen atoms is due to the nucleus
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How many neutrons does an element have if its atomic number is 50 and its mass number is 166
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Sodium chloride can be made as follows: 2na + cl2 ? 2nacl i calculate the maximum amount of nacl possible if 2.3 g of sodium was reacted with excess chlorine. show all your workings.
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Aluminum atoms have 13 protons in the nucleus and 22 electrons outside the nucleus. Helium atoms hav...
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