5.1 & 5.2 Quiz

Mendeleev’s PT listed all the elements by mass and grouped together elements with similar ______

• Properties

• Sizes

• Proton Counts

• Names

Mendeleev predicted that the gaps in his periodic table represented _____

• Imaginary elements

• Elements not found on earth

• Undiscovered elements

• Radioactive elements

The periodic law states that physical & chemical properties of elements are functions of ____

• their atomic masses.

• their electronegativities.

• their valence shell electrons.

• their atomic numbers.

On most periodic tables, the lanthanides and actinides appear ____________.

• in the rightmost column.

• in the leftmost column.

• in the "mattress" section of the PT.

• underneath the main body of the PT.

Which of these noble gases below has the greatest atomic number?

• Ne

• Xe

• Ar

• Kr

An element that has the electron configuration [Ne] 3s2 3p5 is in Period ____

• 3

• 2

• 5

• 4

Tags

NGSS.HS-PS1-1

Elements in the s and p blocks of the periodic table are called __________

• main-group elements

• alloys

• metalloids

• transition metals

Tags

NGSS.HS-PS1-1

In nature the alkali metals are found only in compounds because they _______

• have small atoms

• are rare elements

• have a stable octet

• are very reactive

An element found in groups 3 - 12 of the periodic table is classified as ___

• an alkali metal.

• a transition metal.

• an akaline earth metal.

• a metalloid.

The outer-level electron configuration of a neutral alkaline-earth metal atom consists of ___.

• one electron in the s orbital

• one electron in the p orbital.

• two electrons in the s orbital.

• two electrons in the p orbitals.