मराठी

Give reason for the following: The size of a Cl− ion is greater than the size of a Cl atom.

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प्रश्न

Give reason for the following:

The size of a Cl ion is greater than the size of a Cl atom.

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उत्तर

An anion gets formed when one or more electrons are gained. Thus, there are more electrons than protons. The nucleus's effective positive charge is reduced, resulting in less inward pull. As a result, the size becomes larger.

\[\ce{\underset{(2, 8, 7)}{Cl}+e- ->\underset{(2, 8, 8)}{Cl-}}\]

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पाठ 1: Periodic Table, Periodic Properties and Variations of Properties - lntext Questions [पृष्ठ ११]

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एस.पी. सिंह Concise Chemistry [English] Class 10 ICSE
पाठ 1 Periodic Table, Periodic Properties and Variations of Properties
lntext Questions | Q 21. (i) | पृष्ठ ११

संबंधित प्रश्‍न

Arrange the following as per the instruction given in the brackets:

Na, K, Li (Increasing atomic size)


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 ___________.


Give reason for the following:

Argon atom is bigger than chlorine atom. 


Arrange the following in increasing order of property indicated
 I, I+, I- (atomic size)


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.


Supply the missing word from those in the brackets:
If an element has seven electrons in its outermost shell then it is likely to have the ______ (largest/ smallest) atomic size among all the elements in the same period.


Write information about the given atomic numbers in the table. 10, 20, 7.

Atomic Number Electronic configuration Group Period Element
10        
20        
7        

  1. Electropositive nature of the element(s) increases down the group and decreases across the period
  2. Electronegativity of the element decreases down the group and increases across the period
  3. Atomic size increases down the group and decreases across a period (left to right)
  4. 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.

  1. Name the most electropositive element among them
  2. Name the most electronegative element
  3. Name the element with smallest atomic size
  4. Name the element which is a metalloid
  5. 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)


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