Question

discuss the position of hydrogen in modern periodic table?

Answer 1

• In the periodic table the position of hydrogen is ambiguous
• But it is placed at the top of group 1 above the alkali metals. This is because the electronic configuration of hydrogen is similar to alkali metals. Both have 1 valence electron each.
• However because of its small size the properties of hydrogen do not match with the alkali metals.
• Sometimes hydrogen is not included in any group of the periodic table and it is treated as a special element.