More Atomic Structure Practice: Use the periodic table to help you find the answers!
Draw atomic structures and electron dot diagrams for the following atoms: H, He, Li, Be,
B, C, O, F, Ne, Na, Al, Si, P, Cl, Ar
Here are the atomic structures: NOTE! Only the electrons in their shells are shown
below! The number of protons equals the TOTAL number of electrons. The number of
neutrons is found below.
Here are the electron dot diagrams:
How many neutrons are in the following atoms (show your work!): H, He, Li, Be, B, C,
O, F, Ne, Na, Al, Si, P, Cl, Ar
Atomic mass (rounded) – Atomic Number = # neutrons
0, 2, 4, 5, 6, 6, 8, 10, 10, 12, 14, 14, 16, 18, 22
What are the rows of the periodic table called?
periods
What are the columns of the periodic table called?
groups or families
What is the smallest piece of an element?
atom
What is the smallest piece of a compound?
molecule
How many naturally occurring elements are there?
92
What is most matter on Earth, elements or compounds?
compounds
How much smaller is an electron compared to a proton?
2000 times smaller
How far are electrons from protons?
10,000 times farther
What are valence electrons?
outer shell or highest energy electrons
What do we call atoms with more or less neutrons in an average atom for any element?
isotopes