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प्रश्न
Right or wrong sentence.
Silicon is a metallic element.
विकल्प
Right
Wrong
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उत्तर
The given sentence is wrong.
Explanation:
Silicon is a metalloid (a semimetal); it has properties intermediate between metals and nonmetals rather than being a true metallic element. For how metallic character is decided (why silicon sits along the metal/nonmetal border), see the explanation of periodic trends and metalloid placement.
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संबंधित प्रश्न
Arrange the following as per the instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing order of metallic character).
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element B would have ______ metallic character than A.
Answer the following in respect of element `31/15 P `
What is its valency?
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Which has the maximum metallic character Na, Li or K?
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All groups contain metals and non metals.
Write a scientific reason.
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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.
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| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| H | He | ||||||
| A | B | ||||||
| C | D |
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Electropositivity
Identify the elements with the following property and arrange them in increasing order of their reactivity
- An element which is a soft and reactive metal
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Choose the odd one out and write the reason:
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 |
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