What properties of the elements did Mendeleev study?

How many orbitals does the p sub shell container

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa