Quantum Mechanical Model of the Atom

The de Broglie wave equation is:

• λ=m/hν

• λ=h/mv

• λ=v/mh

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NGSS.HS-PS4-3

NGSS.HS-PS4-1

Who said electrons move in a set path, and can only have certain energy levels

• Neils Bohr

• DeBroglie

• Heisenberg

• Schrödinger

Who created the uncertainty principle?

• Heisenberg

• DeBrogile

• Dalton

• Bohr

Which model was developed by Schrödinger?

• Quantum mechanical model and atomic orbitals

• Plum Pudding model

• Nuclear model

What is Neils Bohr's contribution to the atomic theory?

• Created the atomic theory

• Created a model of the atom with electrons moving around the nucleus in a fixed orbits

• Discovered that the proton had a positive charge

• Discovered the electron

Why did Neils Bohr atomic model fail?

• Because electrons don't exist

• Electrons do not move around in fixed circular orbits

• Electrons are actually positive

• None of the above

What is the correct value for planks constant?

• 6.626 x10^-34 Js^-1

• 6.6 x10^-36 J

• 6 x10³⁸ Js^-1

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NGSS.HS-PS4-3

What was de Broglies main idea?

• He believed electrons did not exist

• He believed electrons, just like light particles, could act as waves

• He developed atomic orbitals

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What was Neils Bohr original idea of the atom?

• A positively charged nucleus surrounded by electrons

• A negatively charged nucleus surrounded by positive electrons

• The nucleus holds all the protons, neutrons and electrons of an atom

Atomic Orbitals were developed by who?

• Heisenberg

• Schrödinger

• Neils Bohr