Electrons in Atoms and the Periodic Table

Question 1

The electron configuration for fluorine is

Accepted Answer

1s22s22p5

Question 2

The frequency and wavelength of all waves are

Accepted Answer

inversely related

Question 3

Within groups (top to bottom), ionic size

Accepted Answer

increases

Question 4

Calcium is an element in the group

Accepted Answer

alkaline earth metals

Question 5

When metallic elements lose electrons to become cations, their radius

Accepted Answer

decreases

Question 6

What property of an element represents a tendency to attract electrons when it forms compounds?

Accepted Answer

electronegativity

Question 7

For elements in group 3A, how many electrons are in its highest occupied energy level?

Accepted Answer

3

Question 8

Who was the Russian chemist and teacher that developed the periodic table of elements?

Accepted Answer

Dmitri Mendeleev

Question 9

The least electronegative element is

Accepted Answer

cesium

Question 10

Which of the following orbital designations are invalid?

Accepted Answer

3f, 2d

Question 11

Gallium is an element in the category called

Accepted Answer

representative elements

Question 12

A rule that states electrons occupy orbitals of lowest energy first.

Accepted Answer

Aufbau Principle

Question 13

Which property is not a general property of metals?

Accepted Answer

poor conductor of heat

Question 14

The periodic law states that when elements are arranged in order of increasing atomic number...

Accepted Answer

True

Question 15

Electromagnetic radiation with the lowest frequency and longest wavelength are

Accepted Answer

radio waves

Question 16

Pick the element with the largest atom: helium, argon, potassium

Accepted Answer

potassium

Question 17

An ion with a positive charge is called a(n) _; an ion with a negative charge is called a(n) _.

Accepted Answer

cation, anion

Question 18

Across periods (left to right), atomic size

Accepted Answer

decreases

Question 19

The SI unit of cycles per second is called a

Accepted Answer

hertz

Question 20

Electrons in an atom can exist between energy levels.

Accepted Answer

False

Question 21

What is the maximum number of electrons that can occupy an orbital?

Accepted Answer

2

Question 22

The number of sublevels within an energy level is _ the principal energy level.

Accepted Answer

equal to

Question 23

Fluorine is a

Accepted Answer

nonmetal

Question 24

The lowest possible energy of the electron is its

Accepted Answer

ground state

Question 25

Metallic elements tend to _ electrons; nonmetallic elements tend to _ electrons.

Accepted Answer

lose, gain

Electrons in Atoms and the Periodic Table

Questions 25

Electrons in Atoms and the Periodic Table

Questions 25