Nonmetals general characteristics

Describe the general characteristics of metals, nonmetals, and metalloids. 

Interpreting Data Nonmetals can be solids, liquids, or gases. They do not conduct electricity and do not react with acids. If a nonmetal is a solid, it is likely to be brittle and have color (other than white or silver). Write the word nonmetal beneath the Classification heading in the data table for those element samples that display the general characteristics of nonmetals. 

Interpreting Data Which elements displayed the general characteristics of nonmetals ... 

One way to compare the properties of the representative elements across a period is to examine the properties of a series of similar compounds. Since oxygen combines with almost all elements, we will compare the properties of oxides of the third-period elements to see how metals differ from metalloids and nonmetals. Some elements in the third period (P, S, and Cl) form several types of oxides, but for simplicity we will consider only those oxides in which the elements have the highest oxidation number. Table 8.5 lists a few general characteristics of these oxides. We observed earlier that oxygen... 

To learn the general characteristics of a reaction between a metal and a nonmetal. To understand electron transfer as a driving force for a chemical reaction. 

The trend from nonmetallic to metallic character as we go down a family is strikingly evident in group 4A. Carbon is a nonmetal silicon and germanium are metalloids tin and lead are metals. In this section we consider a few general characteristics of group 4A and then look more thoroughly at silicon. 

It is often assumed that when a metal combines with a nonmetal, the compound produced is ionic. Alternately, if the electronegativity difference between two elements is large, the compound they form is likely to be ionic. But the ultimate test is to experimentally examine the properties of the compound produced Does it behave like an ionic compound Compare the general characteristics of ionic and covalent compounds with the specific properties of the following metal/nonmetal compounds. Do they appear to be ionic or covalent ... 

A common feature of metal atoms is that they are generally larger in size in comparison with nonmetal atoms. A characteristic of nonmetals is that their atoms have the ability to attach electrons to themselves, leading to the formation of anions. The opposite is true for the metals and as told they alter to cationic forms when their removable electrons leave them. 

There are several general ways to categorize elements in groups 13 to 16. These are metals different in several ways from the transition elements. They range from metallics (other metals) to metalloids (semiconductors) to nonmetals. The elements in these groups are arranged according to their properties, characteristics, and the position of their electrons in their atoms outer shells. These, and other factors, determine how they are depicted in the periodic table. 

Although this theory explains theoretically the experimental observations in the case of ReOj, TiO, and VO, it fails to verify the conductivity characteristics of transition metal oxides such as TiO, VO, MnO, and NiO. Band theory explains the metallic characteristics but fails to account for the electrical properties of insulators or semiconductors and metal-nonmetal transitions because of neglect of electronic correlation inherent in the one-electron approach to the problem. Although there is no universal model for description of the conductivity, magnetic and optical properties of a wide range of materials (e.g., simple and complex oxides, sulfides, phosphides), several models have been proposed (for details, see Refs. 447-453). Of these, a generally accepted one is that described by Goodenough (451). 

Your experimental data will allow you to classify some elements as metals, nonmetals, or metalloids and to determine general trends in metallic and nonmetallic characteristics within the periodic table. 

Describe the format of the periodic table and the general location and characteristics of metals, metalloids, and nonmetals ( 2.6) (EPS 2.35-2.41)... 

The general layout of the Periodic Kingdom, with some of its characteristic regions labeled. The Western Desert and the Southern Island comprise the metallic elements all other elements are nonmetals. 

Metals have a characteristic luster, and they are good conductors of heat and electricity. When metals react with nonmetals, the metal atoms are oxidized to cations and ionic substances are generally formed. Most metal oxides are basic they react with acids to form salts and water. 

Nonmetallic. Formed generally by the combination of nonmetals and having the characteristic properties of nonmetals. 

In addition to atomic weight, there were other reasons to place berylhum with aluminum. Clues to beryllium s valence could be obtained by combining it with oxygen to create an oxide. Metal oxides or hydroxides dissolve in water to form bases, while nonmetal oxides or hydroxides dissolve in water to form acids. Moreover, the chemical characteristics of the oxides generally provide an approximate... 

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