Chemistry, asked by tabish3126, 1 year ago

Promethium; 62. Samarium; 63. Europium; 64. Gadolinium; 65. Terbium

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Answered by Anonymous

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Promethium; 62. Samarium; 63. Europium; 64. Gadolinium; 65. Terbium

=> 61 Promethium

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