Elements names and

Nuclide. Each nuclide is identified by element name and the mass number A, equal to the sum of the numbers of protons Z and neutrons N in the nucleus. The m following the mass number (for example, Zn) indicates a metastable isotope. An asterisk preceding the mass number indicates that the radionuclide occurs in nature. Half-life. The following abbreviations for time units are employed y = years, d = days, h = hours, min = minutes, s = seconds, ms = milliseconds, and ns = nanoseconds. 

Another way to describe an isotope is to state its elemental name and mass number. The stable isotopes of chlorine... 

The written name of a compound includes the names of the elements it contains and information about the numbers of atoms of each element. The elements have to occur in some order, and this order is set by the same guidelines as for the chemical formula (see Section 3-11. Names can contain element names, roots derived from element names, and prefixes indicating the number of atoms of each element. Tables and 3 list the more important roots and prefixes that appear in the names of binaiy compounds. We can summarize the rules for naming binary compounds in three guidelines ... 

The second element begins with a root derived from its elemental name and ends with the suffix-iife. Some common roots are listed in Table 3-1. 

Our goal in this chapter is to help you learn about the composition of the atom, the periodic table, and the writing and naming of chemical formulas. Check with your instructor to see how many element names and symbols you need to know, although you will learn many of them through practice. We will only give you an abbreviated list of ions and molecules, so consult your text for a more extensive list. Have a periodic table handy for the discussion throughout the chapter. Practice, Practice, Practice. 

The following list is given alphabetically by element name and provides the origin of the names of the elements and information on their discoverers and/or isolators. 

In the modern periodic table, each box contains four data, as shown in Figure 1-2. Besides the element name and symbol, the atomic weight is at the bottom, and the atomic number is at the top. The elements are arranged in order of increasing atomic number in horizontal rows called periods. 

The basic materials of systematic chemical nomenclature are the element names and symbols, which are, of themselves, trivial, with the exception of the systematic, provisional names and symbols for the elements of atomic number greater than 109. These provisional names will be superseded eventually by trivial names and symbols. In any case, they make little impact on general chemical practice. 

Additive nomenclature1 is based on the combination of element names or roots of element names and/or ligand names. The simplest and oldest additive nomenclature is binary nomenclature that expresses two components, e.g. sodium chloride. The cationic or electropositive portion of the compound expressed in a binary name is the element name unchanged or a group name ending in -ium , and the anionic or electronegative portion of a compound expressed in the name ends in -ide, -ite or -ate. The proportions of cations and anions in neutral compounds are indicated by Stock numbers or simple or multiplicative prefixes (see Section 3.3.2). Additive nomenclature denotes composition. For examples see Table 1. 

A monatomic anion is named by taking the first part of the element name and adding -ide. Thus the Cl- ion is called chloride. 

Refer to Appendix A for an alphabetical listing of element names and symbols. 

Use the element name and mass number to write the isotope s name. neon-22... 

For each of the following chemical symbols, determine the element name and the number of protons and electrons an atom contains. 

The most simple compounds are those which contain only two elements, one metallic and one non-metallic (explained later). The metal is given the full element name, and the non-metal has the ending -ide. 

The symbols for some of the older elements are derived from former names which are no longer used—for instance, hydrargyrum for mercury (Hg) and argentum for silver (Ag). The origin of all the elements names and symbols is given in the appendix. 

Ask your instructor which of the element names and symbols you will be expected to know for your exams. 

You can practice converting between element names and symbols at the textbook s Web site. 

Ninety-one of the 111 elements in the periodic table occur in nature. The remaining 20 elements are synthetic, which means they can only be made in a laboratory. All chemical elements are organized in a chart called the periodic table of the elements. In this table, the elements are located in specific places in a chart according to their properties and behaviors. The elements name and each elements symbol, which is usually made up of one or two letters, are listed. The one-letter symbol is always written with an uppercase letter, such as F for fluorine and N for nitrogen. When the element has a two-letter symbol, the first letter is uppercase and the second is lowercase, such as Al for aluminum and Si for silicon. In the periodic table in the appendix, note where the metals are located their squares are light purple. 

Anions are named differently from cations. To name an anion consisting of only one element, use the stem of the parent element name and change the ending to -ide. For example, the Cl ion is named by using the stem chlor- from chlorine and adding -ide to form chloride ion. Here are some examples ... 

In the following table elements are listed by letter symbol. The list includes the atomic number, element name, and the atomic weight of each element. 

Applied General Chemistry—study of the general concepts of chemistry with an emphasis on industrial applications. Students measure physical properties of matter, perform chemical calculations, describe atomic and molecular structures, distinguish periodic relationships of elements, name and write inorganic formulas, write equations for chemical reactions, demonstrate stoichiometric relationships, and demonstrate basic laboratory skills. 

Chemical elements (names and symbols) and their atomic numbers are listed on pages 4 and 5 of the IB Chemistry data booklet. 

Name the cation by its element name, and use a Roman numeral in parentheses for the charge. 

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