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प्रश्न
Name two elements in Alkali metals.
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उत्तर
Sodium and potassium.
संबंधित प्रश्न
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
Define:
Periodic table
What do you understand by typical elements?
How many periods and groups are there in the modern periodic table?
How were elements arranged in the long form of the periodic table or the Modern Periodic Table?
Distinguish between:
Group 17 - Group 18
Which of the following statements about the Modern Periodic Table is correct:
Which of the following elements would lose an electron easily?
Give the criteria on the basis of which elements are placed (i) in a group and (ii) in a period in the modern periodic table. The atomic number of an element is 16. According to the criteria, in which group and period it should be placed?
Match the atomic number with the following:
A rare gas.
