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प्रश्न
Name or state following with reference to the element of the first three periods of the periodic table.
The non-metallic element present in period 3 other than sulphur and chlorine.
उत्तर
P [Phosphorus]
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संबंधित प्रश्न
Two elements ‘A’ and ‘B’ belong to the 3rd period of Modern periodic table and are in group 2 and 13, respectively. Compare their following characteristics in tabular form:-
(a) Number of electrons in their atoms
(b) Size of their atoms
(c) Their tendencies to lose electrons
(d) The formula of their oxides
(e) Their metallic character
(f) The formula of their chlorides
How does the number of valence electrons vary on moving from left or right in the second period of the periodic table?
Which of the following is the valence shell for the elements of second period of the modern periodic table?
(a) M shell
(b) K shell
(c) L shell
(d) N shell
The correct increasing order of the atomic radii of the elements oxygen, fluorine and nitrogen is:
(a) O, F, N
(b) N, F, O
(c) O, N, F
(d) F, O, N
What is the common feature of the electronic configuration of the elements at the end of period 2, and period 3?
Arrange the following in order of increasing radii:
Mg2+, Mg, Mg+
An element belongs to the third period and Group IIIA (13) of the periodic table. State: the valency,
Based on the group valency of element write the molecular formula of the following compound giving justification:
Oxide of first group elements.
State the following:
The group to which the element with an electronic configuration of 2, 8, 2 belongs.
Chlorine in the Periodic Table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which of these have Physical and Chemical properties resembling chlorine?
