Replace that old relic with a free updated periodic table from ACS Publications! This booklet is designed to assist elementary science teachers with one of the special aspects of teaching ...

[6 marks] Group 1 of the periodic table contains the alkali metals lithium, sodium and potassium. The alkali metals show a pattern in their reactivity with water. This pattern is shown when small ...

Across a period from left to right, the covalent radius decreases. As you move from left to right across the periodic table, atoms have more electrons in their outer energy level and more protons ...