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प्रश्न
Some elements and their atomic radii are given here. Arrange them in decreasing order of their atomic radii. Identify which of the above elements is the biggest atom and which is smallest?
| Element | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
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उत्तर
- Decreasing order of atomic radii: Cs > Rb > K > Na > Li
- Cesium (Cs) has the biggest atom and lithium (Li) has the smallest atom.
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संबंधित प्रश्न
Why is the size of neon greater than fluorine?
Size of atom progressively becomes smaller when we move from sodium (Na) to chlorine (CI) in the third period of the periodic table?
Fill in the blank:
On moving across a period from right to left in the periodic table, the atomic size of the atom ___________.
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
Write the name and symbol of the element from the description.
The atom having the smallest atomic mass.
Study the radius of the element given below and answer the following questions.
| elements | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
a) Which of the above elements have the smallest atom?
b) In which group of the modern periodic table the above element are belongs?
c) What is the periodic trend observed in the variation of atomic radii down a group?
Among the elements of the second period, Li to Ne, pick out the element with the largest atomic size
Select the correct answer
Atomic radii of fluorine and neon in angstrom unit are
Fill in the blank by selecting the correct word from the bracket.
If an element has seven electrons in its outermost shell then it is likely to have the _____ atomic size among all the elements in the same period.
_______ is the distance between the nucleus of the atom and its outermost shell.
Nanometer unit is used to measure atomic radius.
The size of an atom depends on the number of valence electrons.
Write an Explanation.
Atomic radius
Which of the following is the correct order of atomic size?
Which one of the following depict the correct representation of atomic radius(r) of an atom?
|
(i) |
(ii) |
|
(iii) |
(iv) |
An element with the largest atomic radius among the following is ______.
Arrange the following as per the instruction given in the bracket:
Carbon, Fluorine, Beryllium (decreasing order of atomic size).
