PLEASE HELP! Which rock is an example of a chemical sedimentary rock?
2 answers:
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Answer:
B.They all have their valence electrons in the same type of subshell
Explanation:
- The electron configurations of elements in the same group (column) of the periodic table have them in the same type of subshell.
- But the subshells may be of different shells. Thus , the energies of them need not be the same.
- For example , The Alkalai Metals are found in the first column of the periodic table Group IA. This set of elements all have valence electrons in only the '
' orbital and because they are in the first column they all have
configuration. i.e,
- H
- Li
- Na
- K
Answer:
Explanation:
Hello!
In this case, since a dilution process implies that the moles of the solute remain the same before and after the addition of diluting water, we can write:
Thus, since we know the volume and concentration of the initial sample, we compute the resulting concentration as shown below:
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