How many protons, neutrons, and electrons are present in an atom of aluminum-27?

Number of Protons = 13

Number of Electrons = 13

Number of Neutrons = 27-13 =14

pure substance: iron,copper

impure substance: water,charcoal

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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