9. Element number 120 has been discovered! Using periodic tables on the Internet, tell us some of it's expected properties. Atomic number Group number Preferred Charge Also make general estimates of the element's Radius (nm) Electronegativity Atomic mans (AMU),

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Actinides

The elements in which the extra electron tends to enter the 5f-orbitals of (n–2)th main shell are considered 5f-block elements. They are also named actinides. Actinides include 15 elements, from atomic number 89 to 103.