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प्रश्न
Silicon is a metallic element.
विकल्प
Right
Wrong
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उत्तर
Silicon is a metallic element- Wrong
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संबंधित प्रश्न
Arrange the following as per the instructions given in the brackets:
Na, K, Cl, S, Si (increasing order ionization energy)
Name any five periods properties.
Metallic character and non-metallic character are periodic properties discuss ?
Name the periodic property which relates to the character of element which loses one or more electrons when supplied with energy.
The electronic configuration of an element T is 2, 8, 8, 1.
Is it a metal or a non-metal?
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
A metal M forms as oxide having the formula M2O3. It belongs to third period. Write the atomic number and valency of the metal.
Explain why the following statement is not correct:
All groups contain metals and non metals.
Write a scientific reason.
Metallic character goes on decreasing while going from left to right in a period.
In Period 3, the most metallic element is ______.
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.
Match the atomic number with the following:
A metal of valency one.
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 cation is the _______ character of that element.
Write the name.
The atom having the smallest atomic radius from zero group.
Electronegativity is the metallic property of an element.
Which of the following set of elements is written in order of their increasing metallic character?
Arrange:
Be, Li, C, B, N, O, F (in increasing metallic character).
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
Will the elements in the group to the right of this boron group be more metallic or less metallic in character? Justify your answer.
