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प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
उत्तर
Among the first ten elements, lithium (Li) and beryllium (Be) are metals.
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संबंधित प्रश्न
(b) What is the number of elements is 3rd period, the modern 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
What is the main characteristic of the last element in each period of the periodic table?
Element ‘X’ forms a chloride with the formula XCl2, which is solid with a high melting point. X would most likely be in the same group of the periodic table as: ______
The longest period of the Modern Periodic Table is period.
Which of the following statements about the Modern Periodic Table is correct:
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
Name the non-metals in the first twenty elements.
An element has 2 electrons in its N shell.
State its position in periodic table.
Give reason for the following:
Inert gases do not form ion.
