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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
Choose the word or phrase from the brackets which correctly complete the following statement:
Metals are good ______ (oxidizing agents/reducing agents) because they are electron ______ (acceptors/donors).
Metallic character and non-metallic character are periodic properties discuss ?
Name the periodic property which relates to the character of element which loses one or more electrons when supplied with energy.
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 ?
Complete the following sentences
Moving across a ………….. of the periodic table the elements show increasing ………………..character (group, period, metallic, non-metallic).
Choose the correct answer.
An alkaline earth metal
(i) Lead
(ii) potassium
(iii) calcium
(iv) Copper
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
Supply the missing word from the words given in brackets.
If an element has one electron in its outermost energy level, then it is likely to be _ (metallic, non metallic)
Copy and complete the following sentence choosing the correct word or words from those given below, at the end of the sentence:
The element at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Within a group, where would you expect to find the element with the greatest metallic character.
Arrange the following elements in order of their decreasing metallic character.
Na, Si, Cl, Mg, Al
The tendency of an element to form anion is the ______ character of that element.
Write the name.
The atom having the smallest atomic radius from zero group.
Write an Explanation.
Electropositivity
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 set of elements is written in order of their increasing metallic character?
Which of the following sets of atomic numbers belong to that of alkali metals?
