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प्रश्न
The arrangement of elements in the Modern Periodic Table is based on their ______.
पर्याय
increasing atomic mass in the period
increasing atomic number in the horizontal rows
increasing atomic number in the vertical columns
increasing atomic mass in the group
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उत्तर
The arrangement of elements in the Modern Periodic Table is based on their increasing atomic number in the horizontal rows.
Explanation:
Elements in the Long Form of the Periodic Table are arranged sequentially by their increasing atomic numbers from left to right along the horizontal periods.
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संबंधित प्रश्न
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
State modern periodic law.
How would the tendency to gain electrons change on moving from left to right in a period of the periodic table?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Name the scientist who stated the modern periodic law.
State the number of elements in Period 1 of the Periodic Table.
Right or wrong sentence.
To the left of the zig-zag line in the periodic table are the metal elements.
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
An element with atomic number ______ will form a basic oxide.
Match the atomic number with the following:
A rare gas.
