in the periodic table the elements that are adjacent to the stair step are called metalloid.
in the periodic table the elements that are adjacent to the stair step are called metalloid.
in the periodic table the elements that are adjacent to the stair step are called?
metalloid
the lower the values of ionization energy, electronegativity and electron affinity, the more metallic character the element has. conversely, nonmetallic character increases with higher values of these properties. given the periodic trends of these three properties, metallic character tends to decrease going across a period (or row) and, with some irregularities (mostly) due to poor screening of the nucleus by d and f electrons, and relativistic effects, tends to increase going down a group (or column or family). thus, the most metallic elements (such as caesium and francium) are found at the bottom left of traditional periodic tables and the most nonmetallic elements (oxygen, fluorine, chlorine) at the top right. the combination of horizontal and vertical trends in metallic character explains the stair-shaped dividing line between metals and nonmetals found on some periodic tables, and the practice of sometimes categorizing several elements adjacent to that line, or elements adjacent to those elements, as metalloids.
periodic table
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section::::isotopes for elements 15-29.









































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section::::isotopes for elements 30-44.









































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section::::isotopes for elements 45-59.









































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section::::isotopes for elements 60-74.









































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section::::isotopes for elements 75-89.









































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table of nuclides (segmented, narrow)