Question

1. choose the best answer.

what zone would elements part of groups 3 through 12 belong to?
representative elements
transition elements
inner transition element
nonrepresentative elements

1. choose the best answer.

when you arrange elements by the order of their increasing atomic number, you will periodically see a repetition of their chemical and physical properties; this is a definition of the
group law
periodic law
periodic postulate
chemical law

Explanation:

• For question 7: In the periodic table, elements in groups 3 - 12 are transition elements. Representative elements are in groups 1, 2, and 13 - 18. Inner - transition elements are the lanthanides and actinides. The term "nonrepresentative elements" is not a standard classification for groups 3 - 12.
• For question 8: The periodic law states that when elements are arranged in order of increasing atomic number, there is a periodic repetition of their chemical and physical properties. There is no "group law" in this context. A "periodic postulate" is not the correct term, and "chemical law" is too general.

Answer:

1. transition elements
2. periodic law