(b) Which of these can vary without changing the identity of the element?

Video transcript

everyone in this example, the statement given says the identity of an element is changed by the number of blank. So we need to fill in this blank. What we should think of is atomic number, recall that atomic number is represented by the symbol Z. And we should recall that on or for a given atom on our periodic tables. We would find the atomic number and recall that it should also equal our number of protons for an atom. And so we can say therefore the identity of an element is based on atomic number and changed by the number of protons. So this would be what we use to fill in our blank. So we would say protons and this here is our final answer. To complete this example. If you have any questions, please leave them down below and I will see everyone in the next practice video.