In modern periodic table, the period number indicates the :
a. atomic number
b. atomic mass
c. principal quantum number
d. azimuthal quantum number
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Select the properties which increases regularly with increase in atomic number in atomic number in first group elements of modern periodic table
Correct Answer - A::D (A) Order of metallic character `: Li lt Na, Klt Rb lt Cs` (B) Each element of the group has `ns^(1)` configuration and `1e^(-)` in its valance...
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The atomic number of an element is 16. What is the group number of this element in periodic Table?
Option : C. 16
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La belongs to group 3 while Hg belongs to group 12 and both belong to period 6 of the periodic table.
i. La and Hg both belongs to period 6. Therefore, n = 6. ii. Elements of group 3 to group 12 belong to the d-block of the modem periodic table. iii. The general outer...
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In which group of elements of the modern periodic table are halogen placed ?
Option : a. 17
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How many horizontal rows and vertical columns are present in the modern periodic table?
The modem periodic table consists of seven horizontal rows called periods numbered from 1 to 7 and eighteen vertical columns called groups numbered from 1 to 18.
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<table>, <caption>, <tr>, It indicates table heading, It is used to speedy a table heading,
Column‘A’ Column ‘B’ (1) <table> (D) It is used to indicate creation of a table (2) <caption> (B) It is used to speedy a table heading (3) <tr> (C) Create each row of the table (4) <th> (A) It indicates table...
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The number of periods and groups in modern periodic table ………………..
Correct option is B) 7,18
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Modern periodic law states that the properties of elements are periodic functions of their
D) both B and C
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As per modern periodic law, the properties of the elements are periodic functions of their
C) atomic numbers
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The longest period in the modern periodic table is
Correct option is B) 6th
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