Atomic Structure

Subatomic Particles

100

Which subatomic particle has a positive charge?

Proton

200

Which subatomic particles have a negative charge?

Electrons

300

Which subatomic particles have a neutral charge?

Neutrons

400

What two subatomic particles are found in the nucleus?

Protons and neutrons

500

What is the most probable location of finding an electron.

Orbital

Electron Configuration

100

What are the 4 orbitals?

s, p, d, and f

200

How many electrons can each orbital hold?

s- 2

p- 6

d- 10

f- 14

300

What is the electron configuration for sulfur?

1s²2s²2p⁶3s²3p⁴

400

What is the electron configuration of O^-2

1s²2s²2p⁶

500

Give the noble gas configuration for Mg

[Ne] 3s²

Isotopes

100

What is the definition of an isotope?

Atoms with the same number of protons and different number of neutrons. 

200

Calculate the number of neutrons for the isotope C-14. 

8 neutrons

300

What is the name of the isotope with 28 protons and 25 neutrons?

Ni- 53

400

Determine the protons neutrons and electrons for the Fe-58 atom.

p: 26

n: 32

e: 26

500

In any sample of chlorine atoms, 75.771% will be chlorine-35 and 24.229% will be chlorine 37. Calculate the average atomic mass of chlorine.

(0.75771)(35) +(.24229)(37)

35.484 amu

Ions

100

What is the definition of an ion?

Atoms with the same number protons and different number of electrons.

200

What does it mean to be electrically neutral?

Protons and electrons are equal

300

A positive ion (cation) is created by adding or removing electrons?

Removing electrons

400

The Cl^- ion has the same number of electrons as which noble gas

Ar (Aragon)

500

Determine the protons neutrons and electrons for the Na⁺ ion

p: 11

n: 12

e^-: 10

Wild Card

100

Write the excited state for the Calcium atom

Ground: 2-8-8-2

Excited: 2-8-8-1-1

200

What is the atomic weight of a hypothetical element consisting of two isotopes, one with mass = 64.23 amu (26.0%), and one with mass = 65.32 amu?

100-26=74

(.74)(65.32) + (.26)(64.32)

65.04 amu

300

When Potassium is heated it produces a lilac color. Explain this reaction.

As potassium is heat the electrons move into the excited state, when the electrons fall back down they release energy in the form of light. The wavelength of light corresponds to a lilac color.

400

What was the findings of the gold foil experiment?

Atoms are mostly empty space with a small, dense, positive center. 

500

Consider the species ⁷²Zn, ⁷⁵As and ⁷⁴Ge. These species what in common:

(a) the same number of electrons.

(b) the same number of protons.

(c) the same number of neutrons.

(d) the same number of protons and neutrons.

(e) the same mass number.  

C