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प्रश्न
How does the property vary in periods and in groups?
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उत्तर
Along the period, from left to right in the periodic table the electronegativity increases because of the increase in the nuclear charge which in turn attracts the electrons more strongly. On moving down a group, the electronegativity of the elements decreases because of the increased number of energy levels.
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संबंधित प्रश्न
How would the tendency to gain electrons change on moving from left to right in a period of the periodic table?
How does the chemical reactivity of alkali metals vary on going in group 1 of the periodic table?
On the basis of electronic configuration, how will you identify the first element of a period?
What is a group in the periodic table?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
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(c) (ii) and (iii)
(d) (ii) and (iv)
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(b) valency
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