What is the atomic radius of selenium?

What is the atomic radius of selenium?

190 pm
Selenium/Van der Waals radius

Why does selenium have a larger atomic radius?

Selenium has a greater atomic radius because it is in period 4 and thus has 4 energy levels (while oxygen is in period 2 and only has 2 energy levels).

Does selenium have a small atomic radius?

Compared to calcium, selenium has a smaller atomic radius. Selenium has a larger nuclear charge than calcium.

How is atomic radius defined?

Atomic radius: The radius of an atom. This distance between an atom’s nucleus and outer electron shell. (This is not a fixed entity, so there are numerous definitions of this term, depending upon the measurement used.)

What is 36 on the periodic table?

Krypton
Krypton – Element information, properties and uses | Periodic Table.

What’s the atomic radius of polonium?

200 pm
Polonium/Van der Waals radius

Which is bigger selenium or bromine?

Selenide ion is larger than bromide ion , as it has lower Z , (lower nucular charge ), and it is a dianion.

Which element has the bigger atomic radius?

francium
Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

Is Selenium a neutral atom?

Ground State Electronic Configuration of Selenium – neutral Selenium atom. The ground state electronic configuration of Neutral Selenium atom is [Ar] 3d10 4s2 4p4. The portion of Selenium configuration that is equivalent to the noble gas of the preceding period, is abbreviated as [Ar].

Which is larger oxygen or selenium?

The electron affinity of selenium is greater than oxygen. The reason for this is the small size of oxygen atom as compared to the selenium atom and so its charge density is high,and when then if we add an electron to oxygen atom then the repulsion between electrons will increase.

What do you mean by atomic radius and ionic radius?

Atomic radius is defined as a distance from the center of the nucleus to the outermost shell containing the electrons. Ionic radius is a measure of an atoms ion in a crystal lattice and which is a half distance between two ions that are barely touching each other.

What is the difference between atomic size and atomic radius?

What is Atomic Size? Atomic size is the distance between the centre of the nucleus of an atom and its outermost shell. In basic chemistry, the atomic radius is defined as the shortest distance between the atom’s nuclei and the outermost shell of the atom.