Show:
Atomic Structure
Models
Counting Subatomic Particles
Vocab
PEL's, sublevels, and orbitals
100

Which subatomic particle has a positive charge and which has a negative charge?

Proton (positive) Electron (negative)

100

Who developed the "Hard Sphere Model"?

Dalton

100

What is the number of protons in an atom of bromine

35

100

What is an isotope?

same element, same number of protons, different number of neutrons

100

How many orbitals does the s sublevel have?

1

200

Which subatomic particles are in the nucleus of an atom?

Protons and neutrons

200

Who developed the "Plum Pudding Model"? 

Thomson

200

What is the number of neutrons in argon-41

23

200

What is atomic mass?

The weighted average of all the naturally occurring isotopes.

200

How many orbitals does the d sublevel have?

5

300

Which subatomic particle is the smallest?

Electron

300

Who developed the electron cloud model?

Schrodinger

300

What is the number of neutrons and electrons in copper-65?

neutrons: 36

electrons: 29

300

What is mass number?

This number is the sum of the protons and neutrons and is always a whole number.

300

How many electrons can the third principle energy level hold?

18

400

Which subatomic particles do you add together to get the mass number of an element?

Protons and neutrons

400

Who's atom model had electrons in orbitals around the nucleus?

Bohr

400

What is the number of protons, neutrons, and electrons in silver-107 with a +1 charge?

protons: 47

neutrons: 60

electrons: 46

400

What is the atomic number?

This number is equal to the number of protons in an element and is also equal to the number of electrons.
400

What is the electron configuration for sodium?

1s22s22p63s1

500

What term is used to refer to both protons and neutrons?

Nucleons

500

What was at least one of the two main discoveries that resulted from the "Gold Foil Experiment"?

1) there is a small dense positive nucleus

2) an atom is made of mostly empty space

500

What is the number of protons, neutrons, and electrons in an atom of iodine-127 with a charge of -1?

protons: 53

neutrons: 74

electrons: 54

500

What is an electron configuration? (include 3 important terms in your answer)

The distribution of electrons into principle energy levels, sublevels, and orbitals.

500

An atom has 8 electrons in a d sublevel. How many d orbitals in this sublevel are half full?

2