Atomic number of an element is 18, and electronic configuration is 2, 8, 8. Which statement is correct about the element?

Question

Atomic number of an element is 18, and electronic configuration is 2, 8, 8. Which statement is correct about the element? (किसी तत्व का परमाणु क्रमांक 18 है तथा इलेक्ट्रॉनिक विन्यास 2, 8, 8 है। इसके संदर्भ में कौन सा कथन सत्य है?)

Think Extraordinary · Accepted Answer

Correct Answer: Option A. It is an element of 18th group. Explanation: Element 18 is Argon (2, 8, 8). With 8 valence electrons and complete octet, it belongs to Group 18 (noble gases).

Answer

Option B: It is highly reactive

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Option C: It is metallic in nature

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Option D: It is present in the 2nd period

Periodic Classification of Elements

Atomic number of an element is 18, and electronic configuration is 2, 8, 8. Which statement is correct about the element?