23
X
11
what is the number of protons
The number of protons in an atom is represented by its atomic number. In this case, the number 23 likely refers to the element's atomic number. Therefore, the number of protons is 23.
To determine the number of protons in an atom, you need to know the atomic number of the element. The atomic number represents the number of protons in the nucleus of an atom.
In this case, since you only provided a sequence of numbers (23, X, 11), it is not clear which atomic number you are referring to. Can you please specify the element or provide more context?