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प्रश्न
______ forms the basis of the modern periodic table.
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उत्तर
Atomic number forms the basis of the modern periodic table.
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
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
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
State its position in the periodic table?
Give the symbol and valency of the following element and radical.
Bisulphite
In the modern periodic table, elements are arranged according to their ______
Compare the radii of two species X and Y. Give reasons for your answer.
- X has 12 protons and 12 electrons
- Y has 12 protons and 10 electrons
State the group and period, of the element having three shells with three electrons in valence shell.
