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प्रश्न
Which among the following elements has the largest atomic radii?
विकल्प
Na
Mg
K
Ca
उत्तर
Ca
Explanation -
In the modern periodic table, the atomic radius increases down the group and decreases along the period from left to right. So, out of the given options sodium has the smallest atomic radius while calcium would have the largest atomic radius.
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संबंधित प्रश्न
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 ___________.
Fill in the blanks.
Size of the atoms ______ from left to right across a period and ______ on descending in a group of normal elements.
Arrange the following as per the instruction given in the bracket.
Mg, Cl, Na, S, Si (increasing order of atomic size)
The size of an atom is indicated by its _______.
Atomic radius is expressed in the unit _______.
While going from top to bottom in a group the atomic radius _______.
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.
Arrange the following elements in increasing order of their atomic radii.
- Li, Be, F, N
- Cl, At, Br I
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
