Which of the following groups are assigned or would be assigned for elements having atomic number $Z = 117$ & $Z = 120$ respectively?
(According to long form of periodic table)

Question

Which of the following groups are assigned or would be assigned for elements having atomic number Z = 117 & Z = 120 respectively? (According to long form of periodic table)

TestHub · Accepted Answer

The 7ᵗʰ period ends with the noble gas Oganesson ( $Z = 118$ ), which is in Group 18. Therefore, the element with $Z = 117$ precedes it and belongs to Group 17 (Halogens).

The 8ᵗʰ period begins with $Z = 119$ in Group 1 (Alkali metals). Consequently, the element with $Z = 120$ follows next and falls into Group 2 (Alkaline earth metals).

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