Assign the position of the element having outer electronic configuration, (A) ns2 np2 (n = 6) (B) (n - 1) d2 ns2 (n = 4) (C) (n - 2) f7 (n - 1) d1 ns2 (n = 6) Which of the following statement(s) is/ar

Question

Assign the position of the element having outer electronic configuration, (A) ns2 np2 (n = 6) (B) (n - 1) d2 ns2 (n = 4) (C) (n - 2) f7 (n - 1) d1 ns2 (n = 6) Which of the following statement(s) is/are correct?

Prashant Kotian · Accepted Answer

Correct answer: B,C,D. Step 1: Determine the electronic configurations of beryllium (Be: 1s2 2s2), magnesium (Mg: 1s2 2s2 2p6 3s2), and calcium (Ca: 1s2 2s2 2p6 3s2 3p6 4s2). Step 2: Compare their outermost energy levels. All three elements have two s-electrons in their outermost shells, are classified as alkaline earth metals, and belong to group 2 of the periodic table. Step 3: Beryllium has only 4 electrons total, and its outer energy level (n=2) contains no p-orbitals or p-electrons. Therefore, containing a pair of p-electrons in the outermost energy level is not a shared characteristic.

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