Printable periodic table with electronegativity. The elements in a group have similar physical or chemical characteristics of the outermost electron shells of their atoms ie the same core charge as most. Thompson in 1955 at usa. History mendelevium was discovered by glenn t. 2013 edition this free periodic table wallpaper has a white background.
Unless otherwise indicated the following tables are in acrobat pdf format. Ruthenium is a hard white metal. Seaborg albert ghiorso bernard harvey gregory choppin stanley g. This free periodic table is color coded to indicate the electronegativity of an atom of an element.
It includes element names symbols atomic numbers atomic weights element groups and periods. In chemistry a group also known as a family is a column of elements in the periodic table of the chemical elementsthere are 18 numbered groups in the periodic table and the f block columns between groups 3 and 4 are not numbered. It does not tarnish at room temperatures but oxidises in air at about 8000c. Electronegativity is a trend naturally exhibited in the periodic table but as you can see its not a hard and fast trend.
All average masses are to. The modern periodic table of the elements 1 18 hydrogen 1 h 101 21 2 average relative masses are rounded to two decimal places. Learn about the chemical and physical properties of the elements with these periodic table resources. Periodic table and the elements.