Chemistry
Explain the meaning of the following periodic properties:
(a) Atomic radius
(b) Ionization potential
(c) Electron affinity
(d) Electronegativity
(e) Non-metallic and metallic character.
Periodic Table
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Answer
(a) Atomic radius — It is distance between the center of the nucleus and outer most shell of the atom.
(b) Ionization potential [I.P.] — It is the amount of energy required to remove an electron from the outer most shell of an isolated gaseous atom.
(c) Electron affinity [E.A.] — It is the amount of energy released when an atom in the gaseous state accepts an electron to form an anion.
(d) Electronegativity [E.N.] — It is the tendency of an atom to attract electrons to itself when combined in a compound.
(e) Non-metallic and Metallic character — In terms of electron loss or gain, an element is a:
- Non-metal — if it gains one or more electrons and,
- Metal — if it loses one or more electrons.
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Related Questions
Give reasons for the following:
Atomic size of an element depends on the nuclear charge of that element.
Give reasons for the following:
Down a group electronegativity should increase with increase in nuclear charge but it is seen that the electronegativity decreases.
Give reasons for the following:
If combining atoms have nearly similar electronegativities the bond between them is covalent.
Arrange the following elements as per the guidelines in brackets.
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- C, Li, F, N [in increasing order of electronegativity]
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