Question

period:

• ________ on __________ ____________
• tells ____________ ____________

family:

• ____________ on the __________ ____________
• for columns 1-2 and 13-18, the number in the one’s place represents number of ____________ ____________

metalloids:

• have properties of both ____________ and ____________
• border ____________ line (except al, which is a ____________)

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Explanation:

To solve this fill - in - the - blank problem about the periodic table (a key concept in Chemistry, a subfield of Natural Science), we analyze each section:

Period Section

• Step 1: Recall the definition of a period

A period is a horizontal row on the periodic table. It tells us the number of electron shells an atom has. So the blanks for "Period" can be filled as: "horizontal row" on "the periodic table"; "tells" "the number of" "electron shells".

Family (Group) Section

• Step 1: Recall the definition of a family (group)

A family (group) is a vertical column on the periodic table. For columns 1 - 2 and 13 - 18, the number in the one's place represents the number of valence electrons. So the blanks for "Family" can be filled as: "vertical column" on "the periodic table"; "For columns 1 - 2 and 13 - 18, the number in the one's place represents number of" "valence electrons".

Metalloids Section

• Step 1: Recall the properties of metalloids

Metalloids have properties of both metals and non - metals. They border the "stair - step" line (except Al, which is a metal). So the blanks for "Metalloids" can be filled as: "have properties of both" "metals" "and" "non - metals"; "border" "stair - step" "line (except Al, which is a" "metal)".

Final Answers (Filled Blanks)

• Period:
• "horizontal row" on "the periodic table"
• "tells" "the number of" "electron shells"
• Family:
• "vertical column" on "the periodic table"
• "For columns 1 - 2 and 13 - 18, the number in the one's place represents number of" "valence electrons"
• Metalloids:
• "have properties of both" "metals" "and" "non - metals"
• "border" "stair - step" "line (except Al, which is a" "metal)"

Answer:

To solve this fill - in - the - blank problem about the periodic table (a key concept in Chemistry, a subfield of Natural Science), we analyze each section:

Period Section

• Step 1: Recall the definition of a period

A period is a horizontal row on the periodic table. It tells us the number of electron shells an atom has. So the blanks for "Period" can be filled as: "horizontal row" on "the periodic table"; "tells" "the number of" "electron shells".

Family (Group) Section

• Step 1: Recall the definition of a family (group)

A family (group) is a vertical column on the periodic table. For columns 1 - 2 and 13 - 18, the number in the one's place represents the number of valence electrons. So the blanks for "Family" can be filled as: "vertical column" on "the periodic table"; "For columns 1 - 2 and 13 - 18, the number in the one's place represents number of" "valence electrons".

Metalloids Section

• Step 1: Recall the properties of metalloids

Metalloids have properties of both metals and non - metals. They border the "stair - step" line (except Al, which is a metal). So the blanks for "Metalloids" can be filled as: "have properties of both" "metals" "and" "non - metals"; "border" "stair - step" "line (except Al, which is a" "metal)".

Final Answers (Filled Blanks)

• Period:
• "horizontal row" on "the periodic table"
• "tells" "the number of" "electron shells"
• Family:
• "vertical column" on "the periodic table"
• "For columns 1 - 2 and 13 - 18, the number in the one's place represents number of" "valence electrons"
• Metalloids:
• "have properties of both" "metals" "and" "non - metals"
• "border" "stair - step" "line (except Al, which is a" "metal)"