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प्रश्न
Electropositivity means ______.
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उत्तर
Electropositivity means the tendency of an atom of an element to form cation by losing its valence electrons.
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संबंधित प्रश्न
Choose the word or phrase from the brackets which correctly complete the following statement:
Metals are good ______ (oxidizing agents/reducing agents) because they are electron ______ (acceptors/donors).
Name any five periods properties.
Explain the following:
Metallic character of elements decreases from left to right in a period while it increases in moving down a group.
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
Nature of oxides of the elements ?
In Period 3, the most metallic element is ______.
For the main group of the periodic table, the metallic properties of the elements vary approximately with their position as shown in the table.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| H | He | ||||||
| A | B | ||||||
| C | D |
Will the most metallic element be found at A,B,C or D ?
In the third period, which is the most metallic and most non-metallic element?
Explain
Larger the atomic size, more metallic is the element.
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
Select the correct answer
Which of the following electronic structure is of a metal?
Match the atomic number with the following:
A metal of valency one.
Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer.
The non-metallic character of the elements :
The tendency of an element to form cation is the ______ character of that element.
The tendency of an element to form anion is the ______ character of that element.
Write scientific reason.
The metallic character of elements increases while going down the groups.
The metal which is hard and has a high melting point and used in filaments of electrical bulbs is ______
Which of the following metal (s) do not react with water?
Metals are good ______ because they are electron ______.
Arrange:
Be, Li, C, B, N, O, F (in increasing metallic character).
The given table shows elements with the same number of electrons in its valence shell.
| Elements | A | B | C |
| m.p. | 63.0 | 180.0 | 97.0 |
Arrange them in order of increasing metallic character.
