27 Al
13
Express your answers as integers separated by commas.
1,2,3, ...
To express the answers as integers separated by commas, we need to clarify what exactly the question is asking. The given information "27 Al" and "13" is not clear enough to determine the nature of the question.
If "27 Al" refers to the atomic number and symbol of the element Aluminum, and "13" refers to the atomic number of the element Aluminum, then we can answer by providing some additional information based on these facts:
Atomic number: It represents the number of protons in the nucleus of an atom.
Atomic symbol: It is a one or two-letter shorthand representation of an element.
Therefore, the answers would be:
Atomic number for Aluminum: 13
Atomic symbol for Aluminum: Al
So, expressing these answers as integers separated by commas:
13, Al