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प्रश्न
The tendency of an element to form cation is the ______ character of that element.
विकल्प
non metallic
basic
metallic
acidic
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उत्तर
The tendency of an element to form cation is the metallic character of that element.
Explanation:
Metallic character is defined by an element’s ability to lose electrons easily to form positive ions, known as cations. Metals are typically electropositive, meaning they have low ionisation enthalpy and readily donate electrons, whereas non-metals tend to gain electrons to form anions.
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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).
Arrange the following as per the instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing order of metallic character).
Arrange the following as per the instructions given in the brackets:
Na, K, Cl, S, Si (increasing order ionization energy)
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.
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?
- Is it more or less reactive than calcium?
- What is its valency?
- What will be the formula of its phosphate?
- is it larger or smaller than caesium (Cs) in size?
A metal M forms as oxide having the formula M2O3. It belongs to third period. Write the atomic number and valency of the metal.
In the third period, which is the most metallic and most non-metallic element?
If an element is in group 7 is it likely to be metallic or non metallic in character?
Within a group, where would you expect to find the element with the greatest metallic character.
Identify the metallic oxide which is amphoteric in nature.
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.
Write the name.
The atom having the smallest atomic radius from zero group.
Write an explanation.
Electronegativity
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?
Choose the odd one out and write the reason:
