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Which atom contains exactly 15 protons?

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Any atom should have equal number of protons and electrons. If the atom contains 15 protons then it must contain 15 electrons. read more

They have door numbers 1 and 2. In plot 1 Hydrogen atom resides and in plot 2 Helium resides. So numbers have been assigned to all the plots. In plot number 79 gold resides and next neighbour at 80 Mercury resides. Another neighbour at 78, Platinum resides. For Uranium, plot 92 is allotted. The atomic number decides the name of atom. read more

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