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Question
Fill in the blank in the following statement:
In going across a period (right to left) in periodic table, the atomic size of the atom ...............
Solution
On moving across a period (right to left) in the periodic table, the atomic size of an atom increases.
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RELATED QUESTIONS
How many groups and periods are there in the modern periodic table?
From the following elements :
4Be; 9F; 19K; 20Ca
(i) Select the element having one electron is the outermost shell.
(ii) two elements of the same group.
Write the formula of and mention the nature of the compound formed by the union of 19K and element X(2, 8, 7).
In terms of electronic configurations, explain the variation in the size of the atoms of the elements belonging to the same period and same group ?
In each of the following pair, choose the atom having the bigger size:
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Correct the statements.
Elements in the same periods have equal valency.
Fill in the blank:
on moving from right to left in the second period, the number of valence electrons……….
Arrange the following as per instruction given in the bracket.
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Name the period which is the shortest period of the periodic table.
State the following:
The group to which the element with an electronic configuration of 2, 8, 2 belongs.
