Periodic Table and Trends

What is the correct period and group number for cobalt (Co)?

• Period 3, group 9

• Period 9, group 4

• Period 4, group 9

• Period 4, group 7

If an element is a good conductor of heat and electricity, which classification is it most likely to have?

• Nonmetal

• Metal

• Metalloid

• Noble gas

Which element is an alkaline earth metal?

• Chlorine

• Iron

• Sodium

• Calcium

What is the name of the element in period 5, group 16?

• Polonium

• Tellurium

• Thallium

• Selenium

How many valence electrons does Aluminum (Al) have?

• 1

• 3

• 13

• 27

What is the oxidation number for Magnesium (Mg)?

• 2-

• 2+

• 6-

• 6+

The valence configuration of 5s²5p³ refers to which element?

• Niobium (Nb)

• Iodine (I)

• Antimony (Sb)

• Bismuth (Bi)

Tags

NGSS.HS-PS1-1

Which element has a larger atomic radius than potassium (K)?

• Lithium (Li)

• Scandium (Sc)

• Sulfur (S)

• Cesium (Cs)

Rank the elements from highest to lowest electronegativity: gallium, chlorine, strontium

• Strontium, gallium, chlorine

• Gallium, strontium, chlorine

• Chlorine, gallium, strontium

• Gallium, chlorine, strontium

Tags

NGSS.HS-PS1-1

The periodic table is organized by _________________

• Atomic Number

• Mass Number

• Average Atomic Mass

• Alphabetical Order

Tags

NGSS.MS-PS1-1