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JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties

\(Ca , Ba , S , Sc\) और \(Ar\) के लिये निम्न में से कौन प्रथम आयनन एन्थैल्पी के बढ़ते क्रम को सही क्रम में प्रस्तुत करता हैं ?

  1. A \(Ca < S < Ba < Se < Ar\)
  2. B \(S < Se < Ca < Ba < Ar\)
  3. C \(Ba < Ca < Se < S < Ar\)
  4. D \(Ca < Ba < S < Se < Ar\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(Ba < Ca < Se < S < Ar\)

Step-by-step Solution

Detailed explanation

\(B \) enthalpy increases along the period but decreases down the group. The IE of an element increases as one moves across a period in the periodic table because the electrons are held tighter by the higher effective nuclear charge. The ionization energy of the elements…
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