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प्रश्न
The following questions refer to the Periodic Table.
What happens to the atomic size of elements moving from top to bottom of a group?
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उत्तर
Atomic size increases on moving from top to bottom of a group.
संबंधित प्रश्न
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Fill in the blanks.
Size of the atoms ______ from left to right across a period and ______ on descending in a group of normal elements.
Select the correct answer
Atomic radii of fluorine and neon in angstrom unit are
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
Na, K, Li (Increasing 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.
The electronic configuration of metal A is 2, 8, 18, 1.
The metal A when exposed to air and moisture forms B a green layered compound. A with con. H2 SO4 forms C and D along with water. D is a gaseous compound. Find A, B, C, and D.
- 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.
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
