Names of White guys, and Rules they made

Question 1

Aufbaw principle

Answer 1

fill lowest energy levels first

Question 2

Paudi Exclusion principle

Answer 2

max 2 electrons per orbital

Question 3

hand’s rule

Answer 3

1 electron per orbital before filling it completely

Question 4

Uses of common isotopes that are radioactive

Answer 4

Carbon-14; Dating organic material
Uranium-235; nuclear fission
Iodine-131; thyroid treatments
Hydrogen 2 and 3; nuclear fusion
cobalt 6; cancer treatment
technetium-99m; medical tracer

Question 5

John Dalton

Answer 5

Elements are made of atoms
same element = same atom
atoms cannot be create, divided or destroyed
atoms combine to form compounds in fixed ratios
reactions rearrange atoms

Question 6

J J Thompson

Answer 6

“Cathode ray”
Atoms are made of even smaller particles
Atoms have negatively charged particles named electrons
His model is called the “plum pudding” model

Question 7

Ernest Rutherford

Answer 7

Gold foil experiment
Atoms of a dense nucleus
Between Atoms is mostly empty space

Question 8

Niels Bohr

Answer 8

Classic model of atoms

Question 9

Quantum model

Answer 9

Electrons are in a probability cloud which is an estimate of every place an electron can be