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Electronegativity

What property...

Question

What property of an element is measured by electronegativity?

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Solution

Electronegativity of any element measures the ability of any element to attract the pair of electrons shared in a bond towards itself.
Electronegativity measures the ionic or covalent character of an element.

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Q. The following questions refer to the Periodic Table.
(a) (i) Name the first and last element in period 2.
(ii) What happens to the atomic size of elements moving from top to bottom of a group?
(iii) Which of the elements has the greatest electron affinity among the halogens?
(iv) What is the common feature of the electronic configurations of the elements in group 7?

(b) Supply the missing word from those in the brackets:
(i) If an element has a low ionization energy then it is likely to be _________ (metallic/non-metallic).
(ii) If an element has seven electrons in its outermost shell then it is likely to have the ________ (largest/smallest) atomic size among all the elements in the same period.

(c) (i) The metals of Group 2 from top to bottom are: Be, Mg, Ca, Sr, Ba. Which of these metals will form ions most readily and why?
(ii) What property of an element is measured by electronegativity?

Q. Assertion :Electronegativity is not a measurable quantity. Reason: The electronegativity of any given element is not constant, it varies depending on the element to which it bound.

Q. Assertion :Electronegativity is a property that describes the tendency of an atom to attract electrons (or electron density) toward itself Reason: Metallic character is measured by electro-negativity, lesser the electronegativity, higher is the tendency to loose electron and higher is the metallic character.

Q. does the nature of an electrophile wi electronegative nature of an radioactive element affect the properties or electronegativity of another electrophile of higher electronegativity

Q. Assertion :Flourine is the most electronegative element of the periodic table. Reason: Electronegativity is one measure of an element's ability to form chemical bonds by attracting an electron.

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