The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

As you move down a group in the periodic table, the covalent radius increases ... screen or shield the outer electrons from the nuclear charge.

Electrons have a charge of -1 and neutrons have zero ... In the next episode, there’ll be more on the periodic table, specifically group 1, 7 and 0. SUNAYANA: I’m Dr Sunayana Bhargava.