Answer:
Each element consists of indivisible, minute particles called atoms.
All atoms of a given element are identical.
Atoms of different elements have different masses.
Explanation:
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A)CH3OCH3 is the isomer of CH3CH2OH
Argon has 8 valence electrons. It's atomic number is 18, therefore, in the first shell there are 2, the second has 8 and the third also has eight.