The atomic number of an atom is always equal to the number of its
(1) protons, only(2) neutrons, only(3) protons plus neutrons(4) protons plus electrons

All motion is caused by force? true or false

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.