Periodic Table Review

Which of the following sets of elements have similar properties?

• Ne, Ar, F

• Si, P, Cl

• B, Al, Ga

Why do other elements in the same group (column) as (O) oxygen have similar properties?

• They all have the same number of valence electrons (outer electrons)

• They are all nonmetals.

• They all have the same atomic number.

• They are all found in the same period (row).

What is true about (O) oxygen and (Se) Selenium?

• They are in the same period (row).

• They are metalloids.

• They have the same average atomic mass.

• They are in the same group (column).

Which of these elements is a metalloid?

• O (oxygen)

• Te (tellurium)

• Na (sodium)

• Al (aluminum)

Which element is considered a nonmetal?

• Cl (chlorine)

• Mg (magnesium)

• Si (silicon)

• Au (gold)

Which element is considered a metal?

• C (carbon)

• He (helium)

• Zn (zinc)

• H (hydrogen)

Which element is found in the Group that is non reactive (outer shell is full - 8 electrons)?

• Kr (krypton)

• F (fluorine)

• Li (lithium)

• Be (beryllium)

Which 2 groups are considered the most reactive? (One of the groups has only 1 valence electron and the other has 7 valence electrons, so they each are ready to bound with the other to form a compound)

• Alkali Metals (Group 1) & Alkaline Earth Metals (Group 2)

• Halogens (Group 7) & Noble Gases (Group 8)

• Alkali Metals (Group 1) & Noble Gases (Group 8)

• Alkali Metals (Group 1) & Halogens (Group 7)

What is the MASS number of an atom with 2 protons, 2 electrons, and 2 neutrons?

• 2

• 4

• 6

What happens when you add another proton to oxygen (O)?

• It forms an ion.

• It forms an isotope.

• It forms a new element.