Word Bank:
actinide series alkali metal alkaline earth metal anion
atomic mass atomic number cation family
group halogen lanthanide series metal
metalloid noble gas nonmetal period
periodic law periodic table inner transition metals transition metal
Dmitri Mendeleev developed a chart like arrangement of the elements called the 1 . He stated that if the elements were listed in order of increasing 2 , their properties repeated in a regular manner. He called this the 3 of the elements. The arrangement used today differs from that of Mendeleev in that the elements are arranged in order of increasing 4___. Each horizontal row of elements is called a(n) 5. Each vertical column is called a(n) 6, or , because of the resemblance between elements in the same column, a(n) 7___.
In rows 4 through 7, there is a wide central section containing elements, each of which is called a(n) 8___. Rows 6 and 7 also contain two other sets of elements that are listed below the main chart. These are called the 9 and the 10, respectively. Each of the elements to the left of the stairstep line of the chart, is classified as a(n) 11. Each of the elements at the right side of the stairstep line is classified as a(n) 12. Each of the elements between these two main types, having some properties like one type and other properties like the other type, is called a(n) 13. Each of the elements in the column labeled IA or 1 is called a(n) 14. Each of the elements in the column labeled IIA or 2 is called a(n) 15. Each of the elements in column VIIA or 17 is called a(n) 16. Each of the elements in column VIIIA or 0 or 18 is called a(n) 17.
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Ответ:
f
mExplanation:
f