Periodic Table and Valence Electrons

Elements in the same group or family have _____________.

• the same number of valence electrons and different properties.

• the same number of valence electrons and similar properties

• different number of valence electrons and similar properties.

• different number of valence electrons and different properties.

Which class of elements are malleable, ductile, shiny when clean and polished, good conductors of heat and electricity, and reacts with acids to form hydrogen gas?

• metals

• nonmetals

• metalloids

• ions

What is the name of Group 1 elements?

• Alkali Metals

• Alkaline Earth Metals

• Transition Metals

• Halogens

What is the name of the elements that are unreactive and have a full octet?

• Halogens

• Noble Gases

• Alkali Metals

• Transition Metals

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

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

Which is an alkali metal?

• Magnesium
• Iron
• Sodium
• Europium

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

Elements in a ..................have similar chemical properties.  

• period
• group
• row