Given elements has to be classified as main-group element, a transition element, or inner transition metal and also the group has to be indicated along with whether the element is metal, nonmetal or semi metal. Tl Eu Xe Hf Ru Am B Concept Introduction: In the periodic table, the elements that are present in Group 1, 2, and 13 t0 18 are known as main group elements. They are also called as representative elements. These elements are present in abundant quantity on Earth’s crust. Number of valence electrons present in the atom of representative elements decides its chemical properties. Elements that are present in Group 3 to Group 12 are known as transition elements . They are known as transition metals because they are present in the periodic table where the transition of metallic nature to nonmetallic nature of main group elements occurs. The elements that are present in the lanthanide series and actinide series are known as inner transition elements.

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Chapter 3, Problem 3.11P

Interpretation Introduction

Interpretation:

Given elements has to be classified as main-group element, a transition element, or inner transition metal and also the group has to be indicated along with whether the element is metal, nonmetal or semi metal.

Tl Eu Xe Hf Ru Am B

Concept Introduction:

In the periodic table, the elements that are present in Group 1, 2, and 13 t0 18 are known as main group elements. They are also called as representative elements. These elements are present in abundant quantity on Earth’s crust. Number of valence electrons present in the atom of representative elements decides its chemical properties.

Elements that are present in Group 3 to Group 12 are known as transition elements. They are known as transition metals because they are present in the periodic table where the transition of metallic nature to nonmetallic nature of main group elements occurs.

The elements that are present in the lanthanide series and actinide series are known as inner transition elements.

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