How do transition elements differ from elements in Groups 1 and 2?
|A)||They are less stable.|
|B)||They are usually gases at room temperature.|
|C)||They are more stable.|
|D)||They are brittle and powdery.|
When metal atoms share their outermost electrons with a nonmetal, the metal and nonmetal become __________ .
|A)||more chemically stable|
|C)||less chemically stable|
The elements in the iron triad are __________ .
|A)||iron, copper, and zinc|
|B)||iron, cobalt, and nickel|
|C)||iron, tin, and lead|
|D)||iron, indium, and iridium|
Which of the rare earth metals are used to make compounds that are used in the motion picture industry?
What are the elements of Group 11 that are known as the coinage metals?
|A)||gold, silver, and platinum|
|B)||nickel, silver, and platinum|
|C)||copper, nickel, and gold|
|D)||copper, silver, and gold|
Ninety percent of all the atoms in the universe are __________ .
Elements that are shiny and good conductors of electricity are __________ .
Which group of elements in the periodic table contains only noble gases?
Each atom of an alkali metal has __________ electron(s) in its outer energy level.
What elements are usually gases or brittle solids at room temperature?
Substances that can be hammered or rolled into sheets are __________ .
Substances that can be drawn into wires without breaking are __________ .
Why are metals good conductors of electricity?
|A)||Outer-level electrons are weakly held.|
|B)||Outer-level electrons are tightly held.|
|C)||Metals do not share the electrons in their outer energy levels.|
|D)||The outer energy levels of metals are nearly filled.|
Which of the following alkaline earth metals is radioactive?
The only metal that is a liquid at room temperature is __________ .
Which of the following is most abundant in Earth's crust?
In what type of bonding are positively charged metallic ions surrounded by a cloud of electrons?
__________ have both metallic and nonmetallic properties.
__________ are different forms of the same element.
Which is the most chemically active of all the elements?