How many electrons are in an atom with the electron
configuration of 1s 2s 2p 3s!?

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true