PREODIC TABLE SK015

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

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

What does the 6 represent?

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

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

The atoms of elements belonging to the same group of periodic table have the same

• number of protons.

• number of electrons.

• number of neutrons.

• number of electrons in the outermost shell.

In the modern periodic table, the period indicates the value of:

• Atomic number

• Atomic mass

• Principal quantum number

• Azimuthal quantum number.

Which element has an oxide which dissolves in water to form an acidic solution?

• Al

• Na

• P

• Mg

What is the formula of oxide for element Silicon?

• SiO

• Si₂O

• SiO₂

• SiO₃

What is the formula of oxide for element Al?

• AlO

• Al₂O

• AlO₃

• Al₂O₃