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प्रश्न
What do you understand by atomic size? State its unit?
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उत्तर
Atomic size is the distance between the centre of an atom's nucleus and its outermost shell. It is measured in Angstroms and Picometres.
संबंधित प्रश्न
Write the name and symbol of the element from the description.
The atom having the smallest atomic mass.
Among the elements of the second period, Li to Ne, pick out the element with the largest atomic size
Fill in the blanks.
Size of the atoms ______ from left to right across a period and ______ on descending in a group of normal elements.
Nanometer unit is used to measure 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) |
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?
- Electropositive nature of the element(s) increases down the group and decreases across the period
- Electronegativity of the element decreases down the group and increases across the period
- Atomic size increases down the group and decreases across a period (left to right)
- Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.
- Name the most electropositive element among them
- Name the most electronegative element
- Name the element with smallest atomic size
- Name the element which is a metalloid
- Name the element which shows maximum valency.
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
