Which of the following element was absent in the Mendeleev's periodic table?....

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Question Which of the following element was absent in the Mendeleev's periodic table?
(A) \( \mathrm{Tc} \)
(B) \( \mathrm{Si} \)
(C) \( \mathrm{B} \)
(D) \( \mathrm{F} \)📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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