Why elements combine

ModMadhuri Grade None. Similar Questions Elements with a full outermost energy level are a. The identity of an element is defined by its number of a. How many electrons can an atom's second energy level hold? Write the atomic number of these elements: What will be the formula of the compound formed and the nacure of the bond between them when these two elements chemically combine together? Why are some elements chemically inter?

What do we get when two or more elements are combined? Which of these elements are non-metals? Carbon is also commonly found in the form of coal, graphite, and diamonds. The noble gases e. Still, most of these elements are found in mixtures. When two distinct elements are chemically combined—i. Most elements on Earth bond with other elements to form chemical compounds, such as sodium Na and Chloride Cl , which combine to form table salt NaCl.

Water is another example of a chemical compound. The two or more component elements of a compound can be separated through chemical reactions. Chemical compounds have a unique and defined structure, which consists of a fixed ratio of atoms held together in a defined spatial arrangement by chemical bonds.

Chemical compounds can be:. Pure chemical elements are not considered chemical compounds, even if they consist of diatomic or polyatomic molecules molecules that contain only multiple atoms of a single element, such as H 2 or S 8.

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Introduction to Chemistry. Search for:. Ionic and molecular compounds are named using somewhat-different methods. Binary ionic compounds typically consist of a metal and a nonmetal. The name of the metal is written first, followed by the name of the nonmetal with its ending changed to —ide.

For example, K2O is called potassium oxide. If the metal can form ions with different charges, a Roman numeral in parentheses follows the name of the metal to specify its charge.