Chemistry ( Quantum Theory and the Atom ) lesson 1

Why we need Bohr’s model ?

• To understand the relationship among the atomic structure

• To understand the relationship between electron and protons

• To understand the elements in the periodic table

• To understand the difference between ground and exited state

Define Bohr’s atomic number

• Bohr’s model also correctly predicted the frequencies of the lines in hydrogen atomic emission spectrum

• Bohr’s model also correctly predicted the frequencies of the lines in lithium atomic emission spectrum

• Bohr’s model also correctly predicted the frequencies of the lines in oxygen atomic emission spectrum

• To understand the relationship between atomic structures

What is an example of bohr’s model ?

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Tags

NGSS.HS-PS1-2

Combare between ground state and exited state

• The difference between ground state and exited state is that the ground state is the lowest energy level and the exited state is when an electron gain energy so it moves to higher energy state

• The difference between ground state and exited state is that the exited state is the lowest energy level and the ground state is when an electron gain energy so it moves to higher energy state

Combare between the orbit radius and relative energy

• If the orbit radius was big then the relative energy will be large

  And if the orbit radius was smaller then the relative energy would be small

• If the orbit radius was big then the relative energy will be small

  And if the orbit radius was smaller then the relative energy would be big

• If the orbit radius was small then the relative energy will be large

  And if the orbit radius was bigger then the relative energy would be smaller

• If the orbit radius was big then the relative energy will be large

  And if the orbit radius was smaller then the relative energy would be bigger

Tags

NGSS.HS-ESS1-4

How to calculate the relative energy

• We multiply the number by 2

• We multiply the number by itself

• We divide the number by itself

• We multiply the number by 7

What is emitted when the electron drops from a higher level to a lower level

• Photon

• Lyman

• Balmar

• Paschen

Tags

NGSS.HS-PS4-3

Name the series of spectral lines formed when electrons are dropping to n:1

• Lyman

• Balmar

• Paschen

Name the series of spectral lines formed when electrons are dropping to n:2

• Lyman

• Balmar

• Paschen

Name the series of spectral lines formed when electrons are dropping to n:3

• Lyman

• Balmar

• Paschen

Tags

NGSS.HS-PS4-3