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प्रश्न
From the standpoint of atomic structure, what determines which elements will be the first and which the last in a period of the periodic table?
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उत्तर
- The periodic table is based on the atomic number of an element.
- Furthermore, the valence electrons determine their position in the group.
- Elements with one valence electron are classified as the first group, elements with two valence electrons as the second group, and vice versa.
- An element with 8 valence electrons belongs to the Periodic Table's last group (18th group) (excluding He).
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संबंधित प्रश्न
The modern periodic table was prepared by ______.
What is the number of valence electrons in the atoms of first elements in a period?
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
The elements A, B, C and D belong to groups 1, 2, 14 and 17 respectively of the periodic table. Which of the following pairs of elements would produce a covalent bond?
(i) A and D
(ii) C and D
(iii) A and B
(iv) B and C
(v) A and C
Find the correlation:
Group 13 to 18 : p block : : ______ : d block
In the modern periodic table, the positions of 1 to 20 elements are shown here. Identify the elements A and B. Write their atomic number.
Which of the following elements will form an acidic oxide?
An element with atomic number ______ will form a basic oxide.
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
What is the general name of the last elements of the Periodic Table?
