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प्रश्न
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?
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उत्तर
a) Li
b) first group
c) while going down a group atomic radius goes on increasing. As a result, atomic size increases.
APPEARS IN
संबंधित प्रश्न
Write the name and symbol of the element from the description.
The noble gas with the smallest atomic radius.
Among the elements of the second period, Li to Ne, pick out the element with the largest atomic size
Arrange the following in increasing order of property indicated
I, I+, I- (atomic size)
What happens to the atomic size of elements on moving from left to right in a period?
Arrange the following as per the instruction given in the bracket:
Mg, Cl, Na, S, Si, (decreasing order of atomic size).
Right or wrong sentence.
Nanometer unit is used to measure atomic radius.
Right or wrong sentence.
Moving from left to right, the size of the atom decreases.
Right or wrong sentence.
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 of the following is the correct order of atomic size?
Which of the following gives the correct increasing order of the atomic radii of O, F, and N?
Write the formula of the product formed when the element A (atomic number 19) combines with the element B (atomic number 17). Draw its electronic dot structure. What is the nature of the bond formed?
Arrange the following in order of increasing radii:
Cl−, Cl
Explain your choice.
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
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 A would have ______ atomic size than B.
