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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
APPEARS IN
संबंधित प्रश्न
Answer the following in respect of element `31/15 P `
Is it a metal or non - metal
Name the periodic property which relates to the character of element which loses one or more electrons when supplied with energy.
Explain the following:
Group 17 elements are strong non-metals, while group 1 elements are strong metals.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing non – metallic character
Explain why the following statement is not correct:
All groups contain metals and non metals.
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
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 ?
State whether the following statement is true or false
All members of zero group are non metals.
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
Supply the missing word from the words given in brackets.
If an element has one electron in its outermost energy level, then it is likely to be _ (metallic, non metallic)
Within a group, where would you expect to find the element with the greatest metallic character.
Use the information given in (a) to (h) to identify the substances P to W selecting your answers from the given list.
| List | ||
| Calcium | Oxygen | Copper (II) Oxide |
| Carbon | Calcium hydroxide | Copper (II) Nitrate |
| Lead (II) Oxide | Hydrogen chloride | Chlorine |
| Lead (II) Nitrate | Calcium Oxide | Ammonium chloride |
- P is white solid. When heated produces white fumes (sublime).
- P and R on warming produce an alkaline gas.
- On adding water to T, heat is evolved and R is formed.
- Q burns brightly in the air to form T.
- When S is heated, it gives off brown fumes and leaves a black residue of U.
- A solution of S is formed by warming U with dilute nitric acid.
- V is a gaseous non-metallic element that reacts with hydrogen to form W.
- A solution of W will neutralize the solution of R.
The tendency of an element to form anion is the ______ character of that element.
On moving down the group metallic character increases.
Write scientific reason.
The non-metallic character increases while going from left to right in a period.
3, 1, 2 electrons are in valence shells of X, Y, Z elements. From this information, state the group in which they belong and write their valencies.
Metals are good ______ because they are electron ______.
