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प्रश्न
Write the name.
The atom having the smallest atomic radius from zero group.
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उत्तर
The atom having the smallest atomic radius from zero group- Helium (He)
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संबंधित प्रश्न
Arrange the following as per the instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing order of metallic character).
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.
Answer the following in respect of element `31/15 P `
Is it a metal or non - metal
Give the trend in metallic character:
(i) across the period left to right
Give the trend in metallic character:
down the group top to bottom.
Explain the following:
Group 17 elements are strong non-metals, while group 1 elements are strong metals.
How does the chemical reactivity of
alkali metals vary?
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Choose the correct answer.
An alkaline earth metal
(i) Lead
(ii) potassium
(iii) calcium
(iv) Copper
In Period 3, the most metallic element is ______.
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
Explain
Group 17 elements are non-metals, while group 1 elements are metals.
Select the correct answer
Which of the following electronic structure is of a metal?
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
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.
Electropositivity means ______.
Electronegativity is the metallic property of an element.
A metal ‘M’ is in the first group of the Periodic Table. What will be the formula of its oxide?
Which of the following set of elements is written in order of their increasing metallic character?
Which of the following metal (s) do not react with water?
