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Its position in the periodic table.
An element that readily forms positive ions is called a metal.The arrangement of chemical elements in tabular form where the elements are ordered by their atomic number is called the periodic table. In a periodic table metals are on the left in yellow.
An element that readily forms positive ions is called a metal.The arrangement of chemical elements in tabular form where the elements are ordered by their atomic number is called the periodic table. In a periodic table metals are on the left in yellow.
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Further explanation:
The periodic properties are characteristics that are associated with the different elements found in the periodic table. The origin of different properties is the difference in the atomic structure of the different elements.
For a systematic study of the chemical and physical properties of different elements, they are placed in certain columns called groups and horizontal rows called periods.
The fundamental basis of this arrangement is periodic law that states that chemical elements must be listed in order of their increasing atomic number. When elements are placed in groups in such order it was observed that elements with similar chemical properties repeated after fixed intervals, this was discovered by the Russian scientist Mendeleev. For example, the elements placed in group 1 that included lithium, sodium, potassium, and cesium all reacted vigorously with water. Similarly, the elements in group 17 were termed as halogens as they all readily formed salts with metals of group 1.
The rows of the table called periods and have metals on the left and non-metals on the right. The columns also called groups contains elements with similar chemical properties.
Metals are very good reducing agents that have a high tendency to lose electrons. Their electronegativity is very low. Metals also form cations smaller than an original metal atom. They mostly form an ionic bond.
The properties that identify the metal can be determined by the following:
1. Electronic configuration: A metal generally has 1, 2 or 3valence electrons in its outermost shell.
2. Physical properties: A metal is generally lustrous, hard, malleable, ductile, and solid. It is a good conductor of heat and electricity.
3. Position in the periodic table: Metals are on the bottom left in the periodic table. They are found in group 1 of periodic table.
Therefore, an element is metal is determined by the position of an element in periodic table.
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Answer details
Grade: High School
Subject: Chemistry
Chapter: Periodic table
Keywords: electron, metals, nonmetals, group, period, position, electronic configuration, oxygen, hard, lustrous, element.
