An element is located in Period 7 and Group 14 of the modern periodic table. The three-letter IUPAC symbol for this element is

Step-by-step solution

The position of the element is given as Period 7 and Group 14. Period 7 indicates that the outermost shell is n = 7 . Group 14 belongs to the p-block of the periodic table. For p-block elements, the group number is 10 + number of valence electrons . Thus, the element has 4 valence electrons, corresponding to the outer configuration 7 s ² 7 p ² . To find the atomic number ( Z ), we start from the preceding noble gas, Radon (Rn), which has Z = 86 . After Radon, the 7 s , 5 f , 6 d , and 7 p subshells are filled. The