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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 3, Problem 38E
Textbook Problem
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Classify each of the following as a metal, a nonmetal, or a metalloid:

a. Mn

b. I

c. Te

d. Sb

e. O

Interpretation Introduction

Interpretation:

The given elements are to be classified as metals, non-metals or metalloids.

Concept Introduction:

Elements are broadly classified as metals, non-metals and metalloids on the basis of their tendency to lose or gain electrons.

Metals tend to lose electrons and are placed on the left side as well as the centre of the periodic table. They are good conductors of heat and electricity, are shiny in appearance, have high melting and boiling points etc.

Non-metals tend to gain electrons and are placed on the extreme right side of the periodic table. They are poor conductors of heat and electricity, have a roughappearance, and have low melting and boiling points.

Metalloids may gain or lose electrons and are placed on the slightly right side in the periodic table. They have properties intermediate to that of metals and non-metals. There are six metalloids namely Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb) and Tellurium (Te).

All the elements placed on left of metalloids are metals while those placed on the right of metalloids are non-metals.

Explanation of Solution

a) Mn

Manganese is a chemical element, which is represented by the symbol Mn. It does not exist as a free element. Its atomic number is 25. It has various industrial uses as it acts as a metal alloy. Mn is present in the centre of the periodic table. It is categorized as a metal.

b) I

The atomic number of iodine is 53 and is represented by the symbol I. It exists as a lustrous non-metal. Its color is purple-black. Its sublimation results in the release of violet gas. I is present on the extreme right of the periodic table. It is categorized as a non-metal.

c) Te

Tellurium is a chemical element is represented by the symbol Te. The atomic number of tellurium is 52

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Chemistry In Focus
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