inner transition metal in the bottom of the bottom two rows of the periodic table

vertical column of the periodic table

compound containing one or more water molecules bound within its crystals

(also, noble gas) element in group 18

inner transition metal in the top of the bottom two rows of the periodic table

(also, representative element) element in groups 1, 2, and 13–18

element that is shiny, malleable, good conductor of heat and electricity

element that conducts heat and electricity moderately well, and possesses some properties of metals and some properties of nonmetals

(also, inert gas) element in group 18

element that appears dull, poor conductor of heat and electricity

(also, series) horizontal row of the periodic table

properties of the elements are periodic function of their atomic numbers.

table of the elements that places elements with similar chemical properties close together

(also, period) horizontal row of the period table

element in groups 3–12 (more strictly defined, 3–11; see chapter on transition metals and coordination chemistry)

2.5 The Periodic Table: practice

The Periodic Table: practice problems

4 problems from the book, with its answers. Check your working, or have any of them explained to you on the whiteboard.

Exercises 37

Using the periodic table, classify each of the following elements as a metal or a nonmetal, and then further classify each as a main-group (representative) element, transition metal, or inner transition metal:

(a) uranium

(b) bromine

(d) neon

(e) gold

(f) americium

(g) rhodium

(h) sulfur

(i) carbon

(j) potassium

Exercises 39

Using the periodic table, identify the lightest member of each of the following groups:

Exercises 41

Exercises 43

Key terms · 22

actinide: inner transition metal in the bottom of the bottom two rows of the periodic table
alkali metal: element in group 1
alkaline earth metal: element in group 2
chalcogen: element in group 16
group: vertical column of the periodic table
halogen: element in group 17
hydrate: compound containing one or more water molecules bound within its crystals
inert gas: (also, noble gas) element in group 18
inner transition metal: (also, lanthanide or actinide) element in the bottom two rows; if in the first row, also called lanthanide, or if in the second row, also called actinide
lanthanide: inner transition metal in the top of the bottom two rows of the periodic table
main-group element: (also, representative element) element in groups 1, 2, and 13–18
metal: element that is shiny, malleable, good conductor of heat and electricity
metalloid: element that conducts heat and electricity moderately well, and possesses some properties of metals and some properties of nonmetals
noble gas: (also, inert gas) element in group 18
nonmetal: element that appears dull, poor conductor of heat and electricity
period: (also, series) horizontal row of the periodic table
periodic law: properties of the elements are periodic function of their atomic numbers.
periodic table: table of the elements that places elements with similar chemical properties close together
pnictogen: element in group 15
representative element: (also, main-group element) element in columns 1, 2, and 12–18
series: (also, period) horizontal row of the period table
transition metal: element in groups 3–12 (more strictly defined, 3–11; see chapter on transition metals and coordination chemistry)

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