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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
Metallic character and non-metallic character are periodic properties discuss ?
Explain the following:
Group 17 elements are strong non-metals, while group 1 elements are strong metals.
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
Is it a metal or a non-metal?
How does the chemical reactivity of
alkali metals vary?
The electronic configuration of an element T is 2, 8, 8, 1.
Is it a metal or a non-metal?
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing non – metallic character
Choose the correct answer.
An alkaline earth metal
(i) Lead
(ii) potassium
(iii) calcium
(iv) Copper
iii) Observe the figure and answer the following questions.
a) Identify the block shown by box A and write an electronic configuration of any one element of this block.
b) Identify the block of element denoted by letter B and write its period number.
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 non-metallic element be found at A,B,C or D ?
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
If an element is in group 7 is it likely to be metallic or non metallic in character?
Copy and complete the following sentence choosing the correct word or words from those given below, at the end of the sentence:
The element at the bottom of a group would be expected to show ______ metallic character than the element at the top.
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 :
Silicon is a metallic element.
Electronegativity is the metallic property of an element.
The metal which is hard and has a high melting point and used in filaments of electrical bulbs is ______
The lightest liquid metal is ______
An element has atomic number 17. To which group, the period does it belong? It is metal or non-metal?
Choose the odd one out and write the reason:
