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Answer the following. Why the second ionization enthalpy is greater than the first ionization enthalpy? - Chemistry

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प्रश्न

Answer the following.

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

एका वाक्यात उत्तर
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उत्तर

The second ionization enthalpy (ΔiH2) is greater than the first ionization enthalpy (ΔiH1) as it involves the removal of an electron from the positively charged species.

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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] Standard 11 Maharashtra State Board
पाठ 7 Modern Periodic Table
Exercises | Q 3. (D) | 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.

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


Answer the following.

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


Choose the correct option.

Consider the elements B, Al, Mg, and K predict the correct order of metallic character:


Choose the correct option.

The lanthanides are placed in the periodic table at


Choose the correct option.

Which of the following pairs is isoelectronic?


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 ionic radius


Define electronegativity


What are the valence electrons?


Define ionization enthalpy.


Name the factors on which ionization enthalpy depends?


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


Give reason.

Alkali metals have low ionization enthalpies.


Give reason.

Inert gases have exceptionally high ionization enthalpies.


Give reason.

Fluorine has less electron affinity than chlorine.


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