Chapter F, Problem B.16E

(a)

Interpretation Introduction

Interpretation:

Symbol for the element ytterbium has to be given and also whether it is a metal, nonmetal, or metalloid has to be identified.

Concept Introduction:

Metals are elements that have characteristic properties of thermal conductivity, luster, electrical conductivity, and malleability.  Except mercury, the physical state of all other metals is solids.  They have very high melting points and high density.

Nonmetals are elements that are characterized by the absence of properties like thermal conductivity, luster, electrical conductivity, and malleability.  Mostly nonmetals are gases.  Only bromine is present as liquid in room temperature.  The density of nonmetals is low and they have lower melting points than metals.

Metalloids are elements that possess both metallic and nonmetallic properties.

Element present in the periodic table are represented by a unique name and a chemical symbol.  The chemical symbol of an element is made up of one or two letters.  For most of the elements, the chemical symbol is the first two letters of the element name.  Some of the elements symbol are taken from Latin, Greek, or German names also.

(b)

Interpretation Introduction

Interpretation:

Symbol for the element manganese has to be given and also whether it is a metal, nonmetal, or metalloid has to be identified.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

Symbol for the element selenium has to be given and also whether it is a metal, nonmetal, or metalloid has to be identified.

Concept Introduction:

Refer part (a).