ATOMIC/PERIODIC TRENDS

Question 1

What is trend for atomic radius ?

Answer 1

Atomic radius increases Left and DOWN across periodic table
Also, if ions are charged, an extra electron (negative charge) increases size of atom

Question 2

What is the trend for reactivity of metallic compounds?

Answer 2

reactivity increases DOWN A Column in a period table for metallic compounds (ex.Na, K+)

Question 3

What is the trend for ionization energy?

Answer 3

ionization energy increases UP and RIGHT across periodic table. Also the second ionization energy is Higher than first ionization energy (since electrons held more tightly)