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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.
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संबंधित प्रश्न
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
Which is greater in size an atom or an anion?
Give reason for the following:
Argon atom is bigger than chlorine atom.
Write a scientific reason.
Atomic radius goes on increasing down a group.
On moving from left to right in a periodic table, the size of the atom ______.
The size of an atom is indicated by its ______.
Which of the following is the correct order of size?
- 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 as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
