1. Ammonia has the formula NH3, and methane has the formula CH4. According to Da
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Question
1. Ammonia has the formula NH3, and methane has the formula CH4. According to Dalton, which atom has more hooks on it, N or C, and how many more hooks does it have?
2. Name the three subatomic partides founds in an atom and give their relative masses and charges.
3. In Rutherford's alpha-particle scattening experiment: a) How did he interpret the observation that only a very few of the a particles were scattered by the gold foil and most of them went straight through?
4. Suppose you added one electron and one proton to an atom somewhere in the middle of a period. Which may would this move you on the periodic table and by how many place?
5. Metals are excellent conductors of electricity. Non-metals are poor conductors.
Explanation / Answer
1.NH3 has three hooks where as CH4 has four hooks.CH4 molecule C has 1 hook more than that of N in NH3.
2. Three subatomic particles are electrons, protons and neutrons.relative mass of electron is zero and proton and neutron has 1 unit each respectively.
3. In Rutherford's alpha-particle scattening experiment, most of the particles are passing in straight line and very few particles were scattered by gold foil, from this we can conclude that most of the space in atom is empty and positive charge is located at the center of an atom.
4. Suppose you added one electron and one proton to an atom somewhere in the middle of a period.By adding one proton, element will changes to next higher one and moves to next higher group by one place.
5. metals are highly electropositive and they have loosely held electrons and they move from one place to another place in that metal and act as excellent conductors where as in case of non-metals they are not having loosely held electrons.
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