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प्रश्न
In the third period, which is the most metallic and most non-metallic element?
उत्तर
The elements of third period are:
Na, Mg, Al, Si, P, S, Cl, Ar
The most metallic element is sodium i.e., Na and the most non-metallic element is chlorine i.e., Cl.
Concept Insight:
In a period, metallic character decreases on moving from left to right because of decrease in size of atom due to which elements cannot lose electron easily.
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संबंधित प्रश्न
Answer the following in respect of element `31/15 P `
Is it a metal or non - metal
Write scientific reason.
Metallic character goes on decreasing while going from left to right in a period.
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 ?
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.
Arrange the following elements in order of their decreasing metallic character.
Na, Si, Cl, Mg, Al
Write an Explanation.
Electronegativity
Write scientific reason.
The non-metallic character increases while going from left to right in a period.
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?
Choose the odd one out and write the reason:
