Scientists in a lab are working with two different samples of the element mercury. They know that the different samples are different isotopes.

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

What is the morality of 2.50 l of solution that contains 1.85 mol of anhydrous sodium tetraborate?