The group and period of the element tantalum should be identified. Concept Introduction: The elements in the periodic table are classified according to the nature of groups. Groups are characterised by the type of subshell being filled with electrons. A group is a column of elements in the periodic table. There are 18 groups in the periodic table. Here, f-block columns (between groups 3 and 4) aren’t numbered. The elements in a group have similar physical or chemical characteristics of the outermost electron shells of their atoms. Most of the chemical properties are dominated by the orbital location of the outermost electron. There are three systems of group numbering. The modern numbering group 1 to group 18 is recommended by the International Union of Pure and Applied Chemistry (IUPAC). A period in the periodic table is one of the horizontal rows. All the elements in a period have the same number of electron shells. Going across a period, each element has one more proton. Totally, seven periods of elements occur in the periodic table. In period 8, the periodic table includes elements which may be synthesized after 2016.

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Chapter 3, Problem 3.109QP

Interpretation Introduction

Interpretation:

The group and period of the element tantalum should be identified.

Concept Introduction:

The elements in the periodic table are classified according to the nature of groups. Groups are characterised by the type of subshell being filled with electrons. A group is a column of elements in the periodic table. There are 18 groups in the periodic table. Here, f-block columns (between groups 3 and 4) aren’t numbered. The elements in a group have similar physical or chemical characteristics of the outermost electron shells of their atoms. Most of the chemical properties are dominated by the orbital location of the outermost electron. There are three systems of group numbering. The modern numbering group 1 to group 18 is recommended by the International Union of Pure and Applied Chemistry (IUPAC).

A period in the periodic table is one of the horizontal rows. All the elements in a period have the same number of electron shells. Going across a period, each element has one more proton. Totally, seven periods of elements occur in the periodic table. In period 8, the periodic table includes elements which may be synthesized after 2016.

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