6.2. Electron Configuration and the Periodic Table http://www.ck12.org
b. holmium
c. palladium
d. tellurium- Give the common name for each of the following groups.
a. Group 17
b. Group 2
c. Group 1
d. Group 18 - Where on the periodic table are the most reactive metals?
- Where on the periodic table are the most reactive nonmetals?
- Why are the noble gases almost completely unreactive?
- Which groups are called the representative elements?
- What common name is given to the set of elements located in thed-block?
Problems
- Without referring to the periodic table, write the full electron configuration of the following elements.
a. the element in Period 2 and Group 15
b. the alkaline earth metal in Period 3
c. the noble gas in Period 3 - Using a periodic table, identify the following elements by name.
a. the halogen in Period 5
b. the alkali metal in Period 4
c. the element in Period 4 that has two electrons in thepsublevel
d. the second period element with six valence electrons
e. the lanthanide with threefsublevel electrons
f. the element in Period 6 with five half-filleddorbitals - Which element has five occupied principal energy levels and chemical properties that are similar to those of
gallium? - Without looking at the periodic table, identify the period, group, and block for elements that have the electron
configurations below. Determine the number of valence electrons. Using the periodic table, identify the
element by name and type (metal, nonmetal, or metalloid).
a. [Ar]3d^104 s^24 p^6
b. [Kr]4d^65 s^1
c. [He]2s^22 p^1
d. [Xe]4f^106 s^2
e. [Xe]4f^145 d^36 s^2
f. [Ne]3s^1 - Which two elements have one unpaired electron in the 4psublevel?