Chapter 16, Problem 92A

Interpretation Introduction

(a)

Interpretation:

The given metal molybdenum needs to be classified as metal, non-metal or metalloid

Concept introduction:

Metals shows ductility, malleability, they are lustrous and are also good conductors of electricity. Metals are usually solids in room temperature.

Answer to Problem 92A

Molybdenum is a metal.

Explanation of Solution

The atomic number of molybdenum is 42. Molybdenum is located in group 6 of the d-block. It is a transition element.

In the periodic table, most elements located on the left side of the periodic table are metals.

Hence, molybdenum is a metal.

(b)

Interpretation Introduction

Interpretation:

The given metal bromine needs to be classified as metal, non-metal or metalloid.

Concept introduction:

Non-metals are usually very brittle; they have no luster and are not malleable. They are poor conductors of electricity and heat.

Answer to Problem 92A

Bromine is a non-metal.

Explanation of Solution

The atomic number of Bromine is 36. Bromine is located in group 17 of the p-block.

Bromine is a non-metal.

(c)

Interpretation Introduction

Interpretation:

The given metal arsenic needs to be classified as metal, non-metal or metalloid

Concept introduction:

Metalloids are brittle and have a shiny surface. They are good conductors of electricity. They exhibit properties of both metals and non-metals.

Answer to Problem 92A

Arsenic is a metalloid.

Explanation of Solution

The atomic number of Arsenic is 33. Arsenic is located in group 15 of the p-block.

Arsenic is a metalloid because as it exhibits the properties of both metals and nonmetals.

(d)

Interpretation Introduction

Interpretation:

The given metal neon needs to be classified as metal, non-metal or metalloid

Concept introduction:

Non-metals are usually very brittle; they have no luster and are not malleable. They are poor conductors of electricity and heat.

Answer to Problem 92A

Neon is a non-metal.

Explanation of Solution

The atomic number of Neonis 10. Neonis located in group 18 of the p-block. It is a noble gas.

Neon is a non-metal.

(e)

Interpretation Introduction

Interpretation:

The given metal cerium needs to be classified as metal, non-metal or metalloid.

Concept introduction:

Metals shows ductility, malleability, they are lustrous and are also good conductors of electricity. Metals are usually solids in room temperature.

Answer to Problem 92A

Cerium is a metal.

Explanation of Solution

The atomic number of cerium is 58. Neon is located in the lanthanide series.

Ceriumis a metal.