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Flashcards in Chapter 4 Deck (10)
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1
Q

Who developed a mathematical atomic model?

A

Niels Bohr ?

2
Q

What is the Heisenberg uncertainty principle?

A

We can’t know the location and momentum of an electron at the same time ????

3
Q

What are quantum numbers?

A

Solutions to the various wave equations scientists use to describe the energy, momentum, and probable location of an electron ?

4
Q

Can two electrons have the same quantum number?

A

No. They have their own addresses ??

5
Q

Who was the first to develop an atom model based on experimental evidence?

A

John Dalton?

6
Q

Who named the negatively charged cathode ray particles electrons?

A

George Johnstone Stoney?

7
Q

Who was a professor at Cambridge who reasoned that there was a small region in an atom called the nucleus?

A

Ernest Rutherford?

8
Q

Who was an assistant of Rutherford that designed an experiment that used a thin sheet of gold foil and a beam of alpha particles?

A

Hans Geiger ❄️⛄️

9
Q

Who suggested that electrons were only in certain energy levels, which he called principles energy levels, outside the nucleus.

A

Niels Bohr ?

10
Q

What is an atom’s atomic number?

A

The number of protons in the nucleus ?