Periodicity ( Week 7: 5/4-5/8)

How did Mendeleev arrange the elements?

• alphabetically by element name

• density

• atomic number

• atomic mass

What is on the left side of the dark line on the periodic table?

• Non-Metals

• Metals

• Metalloids

• Anions

Which is a halogen?

• Helium

• Chlorine

• Oxygen

• Niobium

Tags

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A vertical column in the periodic table is called:

• row

• group

• period

• table

In the modern periodic table elements are arranged by:

• valence electrons

• atomic number

• alphabetical order

• atomic mass

How many valance electrons does iodine have?

• 6

• 16

• 7

• 17

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The majority of elements on the periodic table are:

• radioactive.

• nonmetals.

• metals.

• gases.

What period and group is arsenic?

• Period 3, Group 4A

• Period 3, Group 5A

• Period 4, Group 5A

• Period 4, Group 4A

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The group B elements are known as the:

• Rare Earth Metals

• Transition Metals

• Alkaline Earth Metals

• Alkali Metals

Which atom has the largest atomic radius?

• magnesium

• chlorine

• barium

• selenium