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प्रश्न
What are horizontal rows and vertical columns in a periodic table known as?
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उत्तर
The horizontal rows are known as periods and vertical columns in the periodic table are known as groups.
संबंधित प्रश्न
How does the metallic character of elements in Modern Periodic Table vary on moving from left to right in a period, and (ii) down a group?Give reason to justify your answer.
The atomic numbers of four elements P, Q, R and S are 6, 8, 14 and 16 respectively. Out of these, the element known as metalloid is:
(a) P
(b) Q
(c) R
(d) S
Which of the following statement about the modern periodic table is correct?
(a) It has 18 horizontal rows known as periods.
(b) It has 7 vertical columns known as periods.
(c) It has 18 vertical columns known as groups.
(d) It has 7 horizontal rows known as groups.
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
What are the advantages of the periodic table?
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
The scientist who propounded the modern periodic law is ______.
An element which is an essential constituent of all organic compounds belongs to
Match the atomic number with the following:
An element of group 2.
