Atomic Structure

Question 1

Charge magnitude of electrons and protons

Answer 1

1.602x10^-19

Question 2

Mass of protons and neutrons

Answer 2

1.67x10^-27

Question 3

Mass of electron

Answer 3

9.11x10^-31

Question 4

Refers to the number of protons in the nucleus

Answer 4

Atomic Number (Z)

Question 5

Refers to the sum of the masses of the protons and neutrons

Answer 5

Atomic Mass (A)

Question 6

Elements that have different number of neutrons

Answer 6

Isotopes

Question 7

Used to compute atomic mass/weight

Answer 7

Atomic Mass Unit

Question 8

Corresponds to the weighted average of the atomic masses of the atom’s naturally occurring isotopes

Answer 8

Atomic Weight

Question 9

Is 1/12 the mass of Carbon 12

Answer 9

1 amu

Question 10

How many atoms in one mole of a substance?

Answer 10

Avogadro’s Number

Question 11

Avogadro’s Number

Answer 11

6.022x10^23

Question 12

A set of principles or laws that govern systems of atomic and subatomic entities

Answer 12

Quantum Mechanics

Question 13

Model in which electrons are assumed to revolve around the atomic nucleus in discrete orbitals

Answer 13

Bohr Atomic Model

Question 14

One of its principles stipulates that the energies of electrons are quantized; that is electrons are permitted to have only specific values of energy

Answer 14

Quantum Mechanics

Question 15

Who designed the Bohr Atomic Model?

Answer 15

Niels Bohr

Question 16

Represents an early attempt to describe electrons in atoms, in terms of both position and energy

Answer 16

Bohr Atomic Model

Question 17

Model in which the electron is considered to exhibit both wavelike and particle-like characteristics

Answer 17

Wave-Mechanical Model

Question 18

Position of an electron in the wave-mechanical model is described by a probability distribution or _____

Answer 18

Electron Cloud

Question 19

Electrons are in ____ defined by a probability.

Answer 19

orbitals

Question 20

Each orbital at discrete energy level is determined by ___

Answer 20

Quantum Numbers

Question 21

Shells are specified by a _____

Answer 21

Principal Quantum Number

Question 22

The second quantum number signifies the ____

Answer 22

subshell

Question 23

The number of energy states for each subshell is determined by the third quantum number, ___

Answer 23

ml (magnetic)

Question 24

Associated with each electron is a ____, which must be oriented either up or down.

Answer 24

Spin Moment

Question 25

Two possible values for the fourth quantum number

Answer 25

+-1/2

Question 26

What are the quantum numbers?

Answer 26

n - principal l - subsidiary ml - magnetic ms - spin

Question 27

Values of energy that are permitted for electrons

Answer 27

Electron States

Question 28

This principle stipulates that each electron state can hold no more than two electrons, which must have opposite spins

Answer 28

Pauli Exclusion Principle

Question 29

When all electrons occupy the lowest possible energies in accord with the foregoing restrictions, an atom is said to be in its _______

Answer 29

Ground State

Question 30

____ or structure of an atom represents the manner in which these states are occupied

Answer 30

Electron Configuration

Question 31

Are those electrons that occupy the outermost shell

Answer 31

Valence Electrons

Question 32

Electrons found in unfilled shells

Answer 32

Valence Electrons

Question 33

States within the outermost or valence electron shell are completely filled

Answer 33

Stable Electron Configurations

Question 34

Elements that are virtually unreactive chemically

Answer 34

Inert or Noble Gases

Question 35

Valence electrons determine all of the following properties

Answer 35

Chemical Electrical Thermal Optical

Question 36

All of the elements have been classified according to electron configuration in the _______

Answer 36

Periodic Table

Question 37

What are the horizontal rows in the periodic table called?

Answer 37

Periods

Question 38

What are the Group VIIA elements termed as?

Answer 38

Halogens

Question 39

What are the Group IA elements termed as?

Answer 39

Alkali

Question 40

What are the Group IIA elements termed as?

Answer 40

Alkaline Earth Metals

Question 41

What are the Groups IIIB through IIB elements termed as?

Answer 41

Transition Metals

Question 42

Term called to elements that are capable of giving up their few valence electrons to become positively charged ions

Answer 42

Electropositive

Question 43

They readily accept electrons to form negatively charged ions

Answer 43

Electronegative

Question 44

Which side of the periodic table can you find the electropositive elements?

Answer 44

Left

Question 45

Which side of the periodic table can you find the electronegative elements?

Answer 45

Right