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Answer the following. Why the elements belonging to the same group do have similar chemical properties? - Chemistry

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प्रश्न

Answer the following.

Why the elements belonging to the same group do have similar chemical properties?

एका वाक्यात उत्तर

उत्तर

  1. Chemical properties of elements depend upon their valency.
  2. Elements belonging to the same group have the same valency.
    Hence, the elements belonging to the same group show similar chemical properties.
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Periodic Trends in Elemental Properties
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पाठ 7: Modern Periodic Table - Exercises [पृष्ठ १०८]

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बालभारती Chemistry [English] 11 Standard
पाठ 7 Modern Periodic Table
Exercises | Q 3. (E) | पृष्ठ १०८

संबंधित प्रश्‍न

Explain the following.

The atomic radii of Cl, I, and Br are 99, 133, and 114 pm, respectively.


Explain the following.

The ionic radii of FΘ and Naare 133 and 98 pm, respectively.


Explain the following.

13Al is a metal, 14Si is a metalloid and 15P is a nonmetal.


Explain the following.

Cu forms coloured salts while Zn forms colourless salts.


Answer the following.

Ionization enthalpy of Li is 520 kJ mol-1 while that of F is 1681 kJ mol-1. Explain.


Answer the following.

Explain the screening effect with a suitable example.


Answer the following.

Why the second ionization enthalpy is greater than the first ionization enthalpy?


Answer the following.

Explain electronegativity and electron gain enthalpy. Which of the two can be measured experimentally?


Answer the following question.

For the following pair, indicate which of the two species is of large size:

Fe2+ or Fe3+


Answer the following question.

For the following pair, indicate which of the two species is of large size:

Mg2+ or Ca2+


Answer the following question.

Select the smaller ion form the following pair:

K+, Li+


Answer the following question.

Select the smaller ion form the following pair:

N3–, F


With the help of a diagram answer the questions are given below:

  1. Which atom should have smaller ionization energy, oxygen, or sulphur?
  2. The lithium forms +1 ions while beryllium forms +2 ions?

Define electronegativity


Define ionization enthalpy.


Name the factors on which ionization enthalpy depends?


How does ionization enthalpy vary down the group and across a period?


How the atomic size vary in a group and across a period? Explain with suitable example.


Give reason.

Fluorine has less electron affinity than chlorine.


Give reason.

Noble gases possess relatively large atomic size.


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