Question

What is an atom and a moleule
What is the order of magnitude of mass
one atom? What are isotopes?​

Answer 1

Answer:

Atoms are defined as “the basic building blocks of matter”. It is the smallest constituent unit of matter that posses the properties of the chemical element. ... Molecules consist of one or more atoms bound together by covalent (chemical) bonds.

We know, if any atom's atomic mass is in gm unit called gm atomic mass of that atom. And the gm atomic mass is equivalent to 1 mole of that atom. Again 1 mole atom equivalent to Avogadro's number (6.022× 10 exp(23)).

Thus,

Mass of 1 atom = Atomic mass/ Avogadro's number.

Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number. All isotopes of a given element have the same number of protons but different numbers of neutrons in each atom.

Explanation:

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