Structure of Atoms

Question 1

• small particles that carry one unit of negative electrric
• mass is 9.1 x 10 ³¹
• revolving around nucleus

Answer 1

Electrons

Question 2

• unit of measure to identify the size of an atomic
  particle that is so small
• one atomic mass unit = one-twelfth of a carbon12 atom

Answer 2

Atomic Mass Unit (amu)

Question 3

• “protons+neutrons”
• proton mass = 1.673 x 10 ²⁷
• neutron mass = 1.675 x 10 ²⁷

Answer 3

Atomic Mass Number

Question 4

• numbered as 1, 2, 3, etc. or K, L, M, etc.
• value of n sometimes called principal quantum number
• max electron = 2n²

Answer 4

Energy Levels

Question 5

• within each energy level
• labeled s, p, d, f, g, h, i

Answer 5

Sublevels

Question 6

• within each sublevel
• 1, 2, 5, 7, 9, 11, 13

Answer 6

Orbitals

Question 7

• electrons fill orbitals according to a pattern
• 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f
  6d 7p

Answer 7

Electron Configuration