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

एल्यूमिनियम \(+3\) ऑक्सीकरण अवस्था में जबकी थेलीयम \(+1\) तथाा \(+3\) ऑक्सीकरण अवस्था में अस्तित्व रखता है इसका कारण है।

  1. A अक्रिय युग्प प्रभाव
  2. B विकर्णं संबंध
  3. C लैटिस प्रभाव
  4. D लैन्थेनॉइड संकुचन
Verified Solution

Answer & Solution

Correct Answer

(A) अक्रिय युग्प प्रभाव

Step-by-step Solution

Detailed explanation

The outermost electron configuration of \(Tl\) is \(6s^26p^1\). The \(6s\) electrons are strongly attracted towards the nucleus due to its more penetrating power and deshielding of \(d\) and \(f-\) electrons. Hence \(6s\) electrons do not participate in bonding
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