Predict the periods and blocks to which each of the following elements

1.	Predict the periods and blocks to which each of the following elements belong?(i) 12Mg(ii) 26Fe(iii) 29Cu(iv) 13Al
Answer» (i) ₁₂Mg = 2, 8,2 = 1s² , 2s²2p⁶ , 3s² It belongs to 3rd period and s-block. (ii) ₂₆Fe = 2, 8, 14, 2 = 1s₂ , 2s²2p⁶ , 3s² , 3s² , 3p⁶ 3d⁶ , 4s² It belongs to 4th period and dblock. (iii) ₂₉Cu = 2,8,18,1 = 1s² , 2s²2p⁶ , 3s²3s⁶3^d6 , 4s¹ It belong to 4th period and d-block (iv) ₁₃Al = 2, 8, 3 = 1s² , 2s²2p⁶ , 3s² , 3p¹ It belongs to 3rd period and p-block.

Predict the periods and blocks to which each of the following elements belong?(i) 12Mg(ii) 26Fe(iii) 29Cu(iv) 13Al

Answer»

(i) ₁₂Mg = 2, 8,2 = 1s² , 2s²2p⁶ , 3s² It belongs to 3rd period and s-block.

(ii) ₂₆Fe = 2, 8, 14, 2 = 1s₂ , 2s²2p⁶ , 3s² , 3s² , 3p⁶ 3d⁶ , 4s² It belongs to 4th period and dblock.

(iii) ₂₉Cu = 2,8,18,1 = 1s² , 2s²2p⁶ , 3s²3s⁶3^d6 , 4s¹ It belong to 4th period and d-block

(iv) ₁₃Al = 2, 8, 3 = 1s² , 2s²2p⁶ , 3s² , 3p¹ It belongs to 3rd period and p-block.