1.2 Atomic Structure

Question 1

Atomic Notation

Answer 1

A= atomic mass = protons + neutrons (top number)
z= atomic number = protons
M (X) = chemical symbol

Question 2

how to calculate:
- atomic number
- no. of neutrons
- no. of electrons

Answer 2

atomic number = protons = electrons
atomic mass - atomic number = number of neutrons
atomic number + or - ion charge = no. of electrons

Question 3

what are the 2 exceptions to orbital filling diagrams?

Answer 3

copper (Cu)
chromium (Cr)