Chemistry, asked by bangtangirl1, 9 months ago

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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Answered by DRJEASWARY
2

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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