Blocks of the periodic table

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• groups

• towers

• periods

• atomic numbers

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A row in a periodic table is called

• group

• block

• period

• element

how many groups are there in modern periodic table

• 8

• 9

• 18

• 17

All elements in the same row have the same number of shells.

• True

• False

• Sometimes

How many valence electrons are in an element in group 14 in the Periodic Table?

• 4

• 14

• 7

• 8

D block elements are known as .............

• Actinides

• Transition elements

• Lanthanides

• Noble gases

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

Atoms of elements in group 1 have ____________.

• one electron in their outermost energy level

• two electrons in their outermost energy level

• seven electrons in their outermost energy level

• eight electrons in their outermost energy level

Which group is the least reactive on the periodic table?

• metals

• noble gases

• alkali metals

• metalloids