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प्रश्न
Why is the size of sodium is greater than magnesium?
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उत्तर
Since atomic number of magnesium is more than sodium but the numbers of shells are same, the nuclear pull is more in case of Mg atom. Hence its size is smaller than sodium.
संबंधित प्रश्न
Give the trends in atomic size on moving across the period left to right.
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Arrange the following in order of increasing radii:
CI- , CI
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Atomic size increases from left to right across a period.
Nanometer unit is used to measure atomic radius.
When an atom of iodine becomes an iodine ion (I–) the radius will ______
Which of the following are the characteristics of isotopes of an element?
- Isotopes of an element have same atomic masses
- Isotopes of an element have same atomic number
- Isotopes of an element show same physical properties
- Isotopes of an element show same chemical properties
Elements have been arranged in the following sequence on the basis of their increasing atomic masses.
| F, | Na, | Mg, | Al, | Si, | P, | S, | Cl, | Ar, | K |
- Pick two sets of elements which have similar properties.
- The given sequence represents which law of classification of elements?
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
Which one of the following has the largest atomic radius?
