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प्रश्न
Write an Explanation.
Electronegativity
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उत्तर
Electronegativity is the tendency of an atom to attract the shared pair of electrons towards itself in a chemical bond. Elements with high electronegativity strongly pull electrons, while those with low electronegativity tend to lose electrons easily. Electronegativity decreases down a group due to increased atomic size, and increases across a period due to increasing nuclear charge.
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संबंधित प्रश्न
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element B would have ______ metallic character than A.
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
Nature of oxides of the elements ?
An element X belong to 3rd periods and group II of the periodic table state:
whether it is a metal or a non-metal.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing non – metallic character
Choose the correct answer.
An alkaline earth metal
(i) Lead
(ii) potassium
(iii) calcium
(iv) Copper
Study the extract of the Periodic Table given below and answer the questions that follow. Give the alphabet corresponding to the element in question. DO NOT repeat an element. 
Which non-metallic element has the valency of 2?
In the third period, which is the most metallic and most non-metallic element?
Explain
Larger the atomic size, more metallic is the element.
Select the correct answer
Which of the following electronic structure is of a metal?
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
If an element is in group 7 is it likely to be metallic or non metallic in character?
Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer.
The non-metallic character of the elements :
The metallic character of the element decreases moving across a period from left to the right.
Write scientific reason.
The metallic character of elements increases while going down the groups.
Write scientific reason.
The non-metallic character increases while going from left to right in a period.
Which of the following sets of atomic numbers belong to that of alkali metals?
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing metallic character)
Arrange:
Be, Li, C, B, N, O, F (in increasing metallic character).
