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How can I learn Radioactive elements [Atomic no. 104(Rutherfordium)-118(Oganesson)] of periodic table?Like for first group I can say:'HeLiNaKiRabSeFryad'Periodic table in attachment..... |
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Answer» Answer: Period 7 contains the radioactive elements only. It includes actinides which include the heaviest naturally occurring element Californium. All other elements are synthesized artificially. D-block elements it includes are Actinium (Ac), Rutherfordium (RF), Dubnium (DB), Seaborgium (SG), Bohrium (Bh), Hassium (Hs), MEITNERIUM (Mt), and Darmstadtium (Ds). Mnemonic for Period 7: Ak(c)ele R(f) D(b) S(g)harma ki B(H)ook mein H(s)ain Maths ke Difficult sawaal. Read as: Akele R D Sharma ki Book mein Hain Maths ke Difficult sawaal.
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