Periodic Table

What does the Periodic Law state about the properties of elements?

Answer explanation

The Periodic Law states that the properties of elements are periodic functions of their atomic numbers, meaning that elements with similar properties occur at regular intervals when arranged by increasing atomic number.

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NGSS.HS-PS1-1

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How are horizontal rows in the periodic table called?

• Periods

• Groups

• Blocks

• Families

Which group is known as Alkali Metals?

• Alkali Metals are the elements in Group 1 of the periodic table.

• Alkali Metals are the elements in Group 2 of the periodic table.

• Alkali Metals are the elements in Group 17 of the periodic table.

• Alkali Metals are the elements in Group 18 of the periodic table.

Which of the following is a characteristic of metals?

• Gains electrons

• Nonconductors

• Malleable

• Brittle

Which element is located on the 'stairs' and has characteristics of both metals and nonmetals?

• A) B

• B) Na

• C) Hg

• D) Cl

True or False: Metals form positive ions smaller than the atom.

• True

• False

Fill in the blank: The energy required to remove the most loosely held electron from an atom is called ______.

• Ionization Energy

• Electron Affinity

• Electronegativity

• Atomic Radius

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NGSS.HS-PS1-2

Which of the following is a property of metalloids?

• Conductors

• Semi-conductors

• Gains electrons

• Ductile

Fill in the blank: The ionic radius of a positive ion is ______ than the atomic radius of the element.

• smaller

• larger

• equal

• unaffected

True or False: Nonmetals have a valence shell close to complete.

• True

• False

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NGSS.HS-PS1-1