What does the atomic number of an element represent? question 21 options: a. the number of protons in an atom b. the number of neutrons in an atom the mass of an atom c. the total number of protons, neutrons, and electrons in an atom d. the order in which the element was discovered

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.