Consider the following four elements, which are represented according to long form of periodic table — Periodic Table and Periodicity Chemistry Question
Question
Consider the following four elements, which are represented according to long form of periodic table. [SEE DIAGRAM] Here W, Y and Z are left, up and right elements with respect to the element 'X' and 'X' belongs to 16th group and 3rd period. Then according to given information the incorrect statement regarding given elements is :
![Chemistry diagram for: Consider the following four elements, which are represented according to long form of periodic table. [SEE DIAGRAM] Here](/_next/image?url=https%3A%2F%2Furywdhpqdpvmqzlenttu.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fquestion-images%2Fvkj%2Fch01_l2_Q002.png&w=1920&q=75)
💡 Solution & Explanation
Step 1: Relate the atomic numbers to the nearest noble gases in the periodic table. Radon (Rn) has Z=86, and the 7th period ends with the noble gas Oganesson (Og) at Z=118 in Group 18. Step 2: The element with atomic number Z=117 lies immediately before Oganesson (Z=118) in the 7th period, which places it in Group 17 (the halogens). Step 3: The element with atomic number Z=120 will belong to the 8th period. The alkali metal of Group 1 will be Z=119, and the alkaline earth metal of Group 2 will be Z=120. Thus, they belong to groups 17 and 2.