Unit 2 Part 2 Notes 4: Introduction to Electron Configurations

The Quantum Mechanical Model of electrons within an atom says

• we can pinpoint the location of an electron in an atom

• we cannot pinpoint where an electron is, but we can determine its probability

• there's a 50/50 chance of pinpointing the location of an electron in an atom

• we cannot determine the probability of an electron's location

The energy of an electron __________ as it moves further away from the nucleus

• increases
• decreases

_____________ describe the average distance of an electron from the nucleus of an atom.

• Orbitals

• Sublevels

• Principal energy levels

• Heisenberg Uncertainty Principle

Where are sublevels found?

• within an energy level

• within an orbital

• within a wave

• within an electron

Check all letters that represent sublevels:

• s

• p

• d

• f

What is the shape of an s sublevel?

• dumbbell

• sphere

• doughnut

• flower

What is the shape of a p sublevel?

• peanut/dumbbell

• sphere

• doughnut

• flower

In energy level 1, how many types of sublevels is/are there?

• 1

• 3

• 5

• 7

Which sublevel(s) is/are present in the 3rd energy level?

• 3s, 3p, 3f

• 3s, 3p, 3d

• 3p, 3d, 3f

• 3s, 3p

Which energy level contains 4 types of sublevels? (check all that apply):

• 2

• 3

• 4

• 5