The picture shows what a concave lens does to light shining through it. the picture of the object that comes through the lensi is

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.

explanation:

0.07 g/cm³

1.37 g/cm³

football

explanation:

because it is