8.5C Periodic Table (Progress)

Which of the following trends can be observed when moving down a column in the Periodic Table?

• The atomic mass increases.

• The number of valence electrons increases.

• The number of electron energy levels decreases.

• The possible number of bonds formed decreases.

Provided is a representation of the Periodic Table of Elements. When moving across a row in the Periodic Table, which of the following trends appears?

• The atomic mass of the elements increases.

• The metallic property of the elements increases.

• The number of valence electrons decreases.

• The atomic number and density decrease.

A portion of the Periodic Table is provided. Which of the following sequences of elements would all have four valence electrons?

• B, Si, As, Te

• C, Si, Ge, Sn

• O, S, Se, Te

• Ga, Ge, As, Se

Tags

NGSS.MS-PS1-1

A simplified version of the Periodic Table of the Elements is provided. In which location on the Periodic Table are the metalloids found?

• Location A

• Location B

• Location C

• Location D

The diagram represents part of the Periodic Table. Which pair of elements has the same number of valence electrons?

• Boron and Carbon

• Carbon and Aluminum

• Boron and Aluminum

• Aluminum and Silicon