C2.2 Electronic structures and the periodic table

Question 1

What does the modern periodic table order the elements by?

Answer 1

➢ Atomic number

Question 2

What are the main difference between non-metals and metals?

Answer 2

➢ Metals conduct electricity whereas non-metals don’t (except from carbon)
➢ Metals in general have a higher melting and boiling point
➢ Metals are mainly ductile and non-metals are brittle

Question 3

Why does the noble gas not form molecules?

Answer 3

➢ They have no tendency to react and modify their electronic structures by forming molecules