Tabelul Periodic

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

• groups

• towers

• periods

• atomic numbers

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

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Tags

NGSS.HS-PS1-1

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-1

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Tags

NGSS.HS-PS1-1

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

What does 12.011 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

Tags

NGSS.HS-PS1-1

The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

period

• Elements that occur in vertical columns on the periodic table.

• A horizontal row of elements in the periodic table

• Found in group two of the periodic table; highly reactive

• A subatomic particle that has a negative charge