14. State the relationship between atomic number and first ionization energy as the elements in Group 1.
As the atomic number increases, the ionization energy in Group 1 decreases. Explain.
15. The radius of a lithium atom is 130 picometers, and the radius of a fluorine atom is 60 picometers. Describe the general trend in atomic radius as each element in Period 2 is considered in order from left to right: The atomic radius in Period 2 decreases. Explain.
Describe the general trend in electronegativity as each element in Period 2 is considered in order from left to right. The electronegativity across Period 2 increases. Explain.