How many meters are equivalent to 50 feet?
use the conversion factor: 1 meter = 3.28084 feet
a.
2.55 meters
b. 15.24 meters
c. 16.85 meters
d.
164.042 meters

your parents i think this could be it

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.