Onekilopars QnA
Which is the massive part of an atom Why?
The nucleus is the positively charged centre of an atom and contains most of its mass. It is composed of protons, which have a positive charge, and neutrons, which have no charge.
What must differ between the atom of two different elements?
The atoms of different elements differ in the number of protons contained in the nucleus of their atoms. What to parts of an atom has the atomic number represent? The term atomic number, conventionally denoted by the symbol Z, indicates number of protons present in the nucleus of an atom, which is also equal to the number of electrons in an uncharged atom. The number of neutrons is represented by the neutron number (N).
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