How many groups and periods are there in the Modern Periodic Table? How do the atomic size and metallic character of elements vary as we move:
(i) down a group and
(ii) from left to right in a period
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Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic Table.
Answer : (c) The atoms lose their electrons more easily. (On moving from left to right across the periods of the periodic table, the non-metallic character increases. Hence, the tendency to lose...
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How many groups are there in the p-block of periodic table?
6 groups are there in the p-block
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What is modern periodic law? How does it in the removal of some of the anomalies of the Mendeleev’s periodic table?
Modern Periodic law states that “the physical and chemical properties of the elements are periodic functions of their atomic numbers”. When atomic number is taken as fundamental property then abnormalities...
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How many groups and periods are there in the Modern Periodic Table? How do the atomic size and metallic character of elements vary as we move:
There are 18 groups and 7 periods in the Modern Periodic Table. (a) * Atomic size increase * Metallic character increases (b) * Atomic size decreases * Metallic character decreases
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Four elements P, Q, R and S belong to the third period of the Modern Periodic Table and have respectively 1,3, 5 and 7
Electronic configuration of Q : 2, 8, 3 Valency of Q: 3 Electronic configuration of R: 2, 8, 5 Valency of R: 8-5=3 P + S ----> PS 2,8,1 2,8,7
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Two elements 'A' and 'B' belong to the 3rd period of Modern periodic table and are in group 2 and 13 respectively.
( a) no. Of electrons in atom of "A " will be only 12 as they are in third period and must have 3 shells and no. Of electrons in...
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Differentiate between the arrangement of elements in Mendeleev's periodic table and the modern periodic table.
Mendeleev’s Periodic Table Modern Periodic Table Mendeleev's periodic table is based on atomic mass. Elements are arranged in increasing order of their atomic masses. Modern periodic table is based on atomic number. Elements are arranged...
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Differentiate between the arrangement of elements in Mendeleev’s periodic table and Modern periodic table.
Mendeleev’s periodic table Modern periodic table. ...
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State Modern Periodic Law. What is number of groups and periods in the Modern Periodic Table?
Modern Periodic Law states that properties of elements are a periodic function of their atomic number. In Modern Periodic Table there are18 groups and 7 periods.
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There are some balls of red, green and yellow colour lying on a table. There are as many red balls as there are yellow balls.
(b) According to question R = y and y = 2G ∴ R = 2G Hence, the number of red balls is double the number of green balls.
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