The Periodic Table and Energy-Level Models

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

Which statement best describes the arrangement of elements in the periodic table?

• Elements are arranged in decreasing atomic mass from left to right.

• Elements are arranged in decreasing atomic number from left to right.

• Elements are arranged in increasing atomic number from left to right

• Elements are arranged in increasing number of neutrons from left to right.

Atomic number represents which subatomic particle?

• electrons

• protons

• neutrons

All of the elements in a period have the same number of _____.

• energy levels

• valence electrons

• protons

• electrons

All of the elements in a group have the same number of _____.

• energy levels

• valence electrons

• protons

• electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which pair of elements has the most similar properties?

• Be and B

• O and S

• H and Hg

• Na and F

Tags

NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 1

• 2

• 8

• Unlimited

How many electrons can the second and third (for our intents and purposes) energy levels hold?

• 1

• 2

• 8

• Unlimited

Is this the correct Bohr model for silicon (Si)?

• Yes

• No

Tags

NGSS.MS-PS1-1

Is this the correct Bohr model for carbon (C)?

• Yes

• No

Tags

NGSS.MS-PS1-1