What is a periodic property? How the following properties vary in a group and in a period a)IE b)EN
Answers
Explanation:
ANSWER:
a) Atomic radius: The distance between the nucleus and outermost orbitals called an atomic radius. Atomic radii increase from top to bottom in a group because the no. of shells increases. Atomic radii of elements decrease across the period from left to right. As electrons enter into the same shell.
b) Ionization energy: The energy required to remove an electron from the outermost orbit or shell of a neutral gaseous atom is called ionization energy. Ionization energy decreases as we go down in a group. Ionization energy increases from left to right in a period.
c) Electron affinity: Electron affinity of an element is defined as the energy liberated when an electron is added to its neutral gaseous atom. Group: Electron affinity decreases as we go down in a group. Electron affinity increase along a period from left to right.
d) Electronegativity: The electronegativity of an element is defined as the relative tendency of its atom to attract electrons towards it when it is bounded to the atom of another element. Electronegativity values of elements decreases as we go down in a group. Electronegativity increases along a period from left to right.
a) Atomic radius:
The distance between the nucleus and outermost orbitals called an atomic radius. Atomic radii increase from top to bottom in a group because the no. of shells increases. Atomic radii of elements decrease across the period from left to right. As electrons enter into the same shell.
b) Ionization energy:
The energy required to remove an electron from the outermost orbit or shell of a neutral gaseous atom is called ionization energy. Ionization energy decreases as we go down in a group. Ionization energy increases from left to right in a period.
c) Electron affinity:
Electron affinity of an element is defined as the energy liberated when an electron is added to its neutral gaseous atom. Group: Electron affinity decreases as we go down in a group. Electron affinity increase along a period from left to right.
d) Electronegativity:
The electronegativity of an element is defined as the relative tendency of its atom to attract electrons towards it when it is bounded to the atom of another element. Electronegativity values of elements decreases as we go down in a group. Electronegativity increases along a period from left to right.