Why does electronegativity increase as you move across the periodic Table?
What’s the difference between electronegativity and ionization energy?
Why does atomic radius decrease as you move across the periodic table?
Which of the following elements has the largest atomic radius:
Li, Na, Rb
What is meant by atomic radius?

Galileo was the first to notice that the moon has craters, valleys, and mountains. how might this have changed people's perception of the moon at the time?

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.

Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.