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प्रश्न
Arrange the following elements in order of their decreasing metallic character.
Na, Si, Cl, Mg, Al
पर्याय
Cl > Si > Al > Mg > Na
Na > Mg > Al > Si > Cl
Na > Al > Mg > Cl > Si
Al > Na > Si > Ca > Mg
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उत्तर
Na > Mg > Al > Si > Cl
Explanation:
Metallic character refers to the tendency of an element to lose electrons. In the periodic table:
- Across a period (from left to right), metallic character decreases because the atomic size decreases and the effective nuclear charge increases, making it harder to lose electrons.
- All the given elements (Na, Mg, Al, Si, Cl) belong to Period 3.
- Arranging them from left to right in Period 3 gives the order of decreasing metallic character: Sodium (Na) > Magnesium (Mg) > Aluminium (Al) > Silicon (Si) > Chlorine (Cl).
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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).
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.
Is is metal or non-metal?
Name any five periods properties.
Give the trend in metallic character:
(i) across the period left to right
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 ?
How does the chemical reactivity of
alkali metals vary?
Complete the following sentences
Moving across a ………….. of the periodic table the elements show increasing ………………..character (group, period, metallic, non-metallic).
Which has the maximum metallic character Na, Li or K?
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.
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.
Write a scientific reason.
The non-metallic character increases while going from left to right in a period.
Which of the following set of elements is written in order of their increasing metallic character?
An element has atomic number 17. To which group, the period does it belong? It is metal or non-metal?
Which of the following sets of atomic numbers belong to that of alkali metals?
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
- The metal which is an important constituent of limestone
- The metal which exists in liquid state at room temperature
