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प्रश्न
Which of the following elements would lose an electron easily?
विकल्प
Mg
Na
K
Ca
उत्तर
K
Explanation -
In the modern periodic table, the metallic character of the elements increases down the group and the metallic character decreases along the period from left to right.
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संबंधित प्रश्न
Give two example of group 18 elements.
Give alongside is a part of the periodic table :
As we move horizontally from left to right:
| Li | Be | B | C | N | O | F | |
| Na | Mg | Al | Si | P | S | Cl |
(i) What happens to the metallic character of the elements?
(ii) What happens to the atomic size?
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
Give the symbol and valency of the following element and radical.
Aluminium
Give the symbol and valency of the following element and radical.
Nitrogen [Nitride]
Give the symbol and valency of the following element and radical.
Carbonate
The modern periodic table has 1 to 7 periods.
In the modern periodic table, the positions of 1 to 20 elements are shown here. Identify the elements A and B. Write their atomic number.
