The answer should be false. Elements contain only one atom.
Thomson's atomic model is a theory about the atomic structure proposed in 1904 by Thomson, who discovered the electron in 1897, a few years before the discovery of the proton and the neutron.
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Answer:
solids have definite shape and volume. liquid have definite volume but not definite shape. gases do not have definite volume as well as definite shape.
B. 1 mole of beryllium, 2 moles of oxygen, 2 moles of hydrogen
The answer to this problem is quite simple, it’s 9