description Does any element with Z ≤ 92 match the description? If you checked yes, give the symbol of an element with Z ≤ 92 that matches. An element in Period 4 and Group 1A. Yes
Read each description in the first column of the table below. If any chemical element with
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We have to choose such elements which has atomic number equal or less than 92 of atomic number of Uranium.
(1) An element in period 4 and group 1 A -
Group 1 A is alkali metal group and it's 4 the period has potassium (K).
(2) A semimetal in Group 8A -
Group 8A are inert gases, He, Be, Ar, Kr,Xe, Rn etc. These all are non metallic uni - atomic Noble gases. No any descriptive element is in this group.
(3) An alkaline earth metal with a higher atomic number than thallium -
Radium (Ra) has atomic number of 88 which is an alkaline earth metal.
(4) A transition element in period 6 -
In period six transition elements present from La-57 to Hg-80. These include La, Hf ,Ta, W, Re ,Os, Ir, Pt, Au,Hg .
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