Which is the first element in the periodic table?
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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 element of zero group of the Periodic Table is –
Option : C. He
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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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In L-C-R series circuit suppose `omega_(r)` is resonance frequency, then match the following table, `{:(,,"Table-1",,"Table-2"),(,(A),"If " omegagtome
Correct Answer - (A) Q, (B) S, (C) Q, (D) P
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If the valence shell electronic configuration of an element is 3s^2 3p^1, in which block of the periodic table is it placed?
The element having valence shell electronic configuration 3s2 3p1 must be placed in the p - block of the periodic table as its last electron enters in p-subshell (3p).
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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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Nitrogen is the element of group-VA of the periodic table. Which of the following is the atomic number of the next element in the group?
Correct option is C) 15
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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 valency of an element which belongs to 3rd period and 2nd group of periodic table is
Correct option is A) 2
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