Calculale la aceleración radial de un punto en el ecuador de la tierra b) repite problema para el polo norte de la tierra
tomé la radio de la tierra como 6.37 x 10.6 metros​

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

the answer is minerals.

im pretty sure its b