Atomic Radius
1. What is the Atomic Radius of an Atom?
The atomic radius of an atom is the distance from the center of the nucleus to the outermost shell of the atom
2. Which has Largest Atomic Radius?
Francium(Atomic number: 87) has largest radius in periodic table. The atomic radius of francium is 348 pm.
3. Which Element has the Smallest Atomic Radius?
Helium(Atomic number: 2) has smallest atomic radius. The atomic radius of a helium atom is 31 pm.
4. Which among them is largest Radius: Metallic Radius, Covalent Radius or Van der Waals radius?
Van der Waal radius is largest among all of them because van der Waals radius is defined between two adjacent non bonded atoms in a molecule.
5. What is definition of Atomic Radius?
Atomic radius of an atom is defined as the total distance from nucleus of atom to the outermost orbit in which electron is revolving.
6. What is Periodic Trend of Atomic Radius?
Atomic radius increases as we move from top to bottom in a group because number of shells increases. Atomic radius decreases as we move from left to right in a period due to increase in effective nuclear charge.
7. Atomic Radius Measured in?
Atomic radius is generally measured in picometer. It is measured in power of 10-9 to 10-12.
8. What is Formula for measuring Covalent Radius?
Covalent radius = 1/2(internuclear distance between two covalently bonded atom).
9. Why do Atomic Radii Increase down a Group?
Atomic radius increases as we move from top to bottom in a group because number of shells increases, and hence size increases.
10. Why do Atomic Radii Decrease across a Period?
Atomic radius decreases as we move from left to right in a period due to increase in effective nuclear charge.
Atomic Radius
Atomic Radius is defined as the total distance between the center of the atom to the outermost orbit in which the electron is revolving. Atomic Radius tells about the atomic size. Since Atoms are considered to be spherical, the size of an atom can be calculated by measuring its radius. Atomic radius is necessary to understand the behavior and properties shown by atoms. Some of the properties of an atom are affected by atomic radius.
In this article, we are going to learn about atomic radius, types of atomic radius, the atomic radius chart of some common elements, trend of atomic radius in the periodic table in detail.
Table of Content
- Atomic Radius Definition
- Atomic Radius Formula
- Types of Atomic Radius
- Atomic Radius of Some Common Elements
- Atomic Radius Chart