What two things determine the stability of an atom? check all that apply. a. how many electrons are in the atom b. how many neutrons are in the atom c. how many protons are in the atom d. the ratio between the protons and the electrons

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer