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Which one of ...

Question

Which one of the following is relative periodic property? a) Electronegativity b) Electron affinity c) Atomic radii d) Ionic radii

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Q. Choose the correct answer:
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
(a) Atomic size increases from left to right across a period.
(b) Ionisation potential increases from left to right across a period.
(c) Electron affinity increases going down a group.
(d) Electronegativity increases going down a group.

Q. How many of the following relation(s) is/are correct regarding the given properties?

(a)

C < N > O < F

: First ionization enthalpy

(b)

C l > F > B r

: First electron affinity

(c)

O > S > S e

: Electronegativity

(d)

L i > B e > B

: Second ionization enthalpy

(e)

B > B e > L i

: Covalent radii

Q. Identify the correct statements from the following.
(a) An element with low ionization potential has high electropositivity and hence give out electrons easily.
(b) Due to decrease in ionization energy, in a group, the oxidizing property decreases.
(c) Electronegativity decreases along a period due to increase in nuclear charge and increase in atomic size.
(d) Due to increase in electron affinity the reducing property increases along a period.

Q. The amount of energy released when an atom in the gaseous state accepts an electron to form an anion. factor which affect electron affinity are: atomic size and Nuclear charge. As atomic radii increases, electron affinity increase. As nuclear charge increase, electron affinity increase. it decrease down a group and increases across a period. Explain.

Q. Atomic radii of 3 non-metals

A, B, C

belonging to the same group are

A < B < C

. Predict the order of electron affinity values.

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