The periodic table’s arrangement also allows scientists to discern trends in element properties, including electronegativity, ionization energy, and atomic radius. Many scientists worked on the ...

Aluminum is a metal in group IIIA of the periodic table with atomic number 13 ... The electronic configuration of Aluminum is (Ne)(3s) 2 (3p) 1, and it has an atomic radius of 0.143 nm. At room ...

Copper is a metal in group IB of the periodic table with the atomic number 29 and an atomic ... The electronic configuration of coper is (Ar)(3d) 10 (4s) 1, and an atomic radius of 0.128 nm. Copper is ...

Elements are placed in order of increasing atomic number, which is the number of protons in an atom's nucleus. The table is divided into rows called periods and columns called groups or families.

The number of subatomic particles in an atom can be calculated from the atom's atomic number and mass number. The periodic table - AQA Mendeleev ... Transition metals - AQA The transition elements ...

The periodic table The periodic table is a chart of all the elements arranged in increasing atomic number. Group 1 alkali metals The Group 1 elements, also known as the alkali metals, all react ...