# CHEM-1111 Term 2 test

## What is the uncertainty principle?

The principle states that we are unable to determine an electron's exact momentum and position

## What is the de Broglie's eqauation?

wavelength = h/mv

## In de Broglie's equation, what is velocity proportional to?

velocity is proportional to wavelength

## In the de broglie's equation, what is position related to?

Position is related to particle matter

## What does the principal quantum number represent

The "n" value represents the location, size and energy level of the orbital

## How can you find an electron's energy level?

En= -2.18x10^-18((1/n^2f)-(1/n^2i))

## What could the possible "n" values be?

n could equal to any number from 0-9

## What does the angular momentum quantum number represent?

it represents the shape of the orbital

## how can you determine the "l" value?

l = n-1

## what sublevels are designated by "l"

s, p, d, f

## how many orbitals and electrons can the s sublevel hold?

orbital- 1

electrons- 2

## how many orbitals and electrons can the d sublevel hold?

orbital - 3

electrons - 6

## how many orbitals and electrons can the d orbital hold

orbital - 5

electrons - 10

## how many orbitals and electrons can the f sublevel hold?

orbital - 7

electrons - 14