Question
- The property which is not periodic in nature is ____ (radioactivity / oxidising power)
- Covalent radius of atoms is ____ than Vanderwaal’s radius. ( less / higher)
- There ____ groups in a long form of periodic table. ( 18 / 9)
- Example of a light metal is ____. (K / Fe)
- Group and period number of 19K are ____ and ____. (4 and 2 / 1 and 4)
Answer
- The property which is not periodic in nature is radioactivity.
- Covalent radius of atoms is less than Vanderwaal’s radius.
- There are 18 groups in a long form of periodic table.
- Example of a light metal is K (potassium).
- Group and period number of 19K are 1 and 4.