Answer:
Group 18, also known as the Noble Gasses
Explanation:
Atoms strive for full stability by gaining or losing electrons to get 8 valence electrons in their valence shell, but Group 18 already has 8 electrons in their valence shell, and are therefore already stable in their ground state.
The 3d sublevel is not filled until after the 4s sublevel, because the 3d sublevel has more energy than the 4s sublevel, and less energy than the 4p sublevel. (:
In stars helium atoms are used with hydrogen atoms in order to produce energy.
Answer: A )
Answer: can someone please translate so i can answer.
Explanation:
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Answer:
Subtract the mass of the CuSO4⋅ 5H2O from the mass of CuSO4 is the right one