everyday science MCQ #48835

everyday science MCQ #48835

1. Question 1

   Q1. Moving down Group 17 from fluorine to iodine what happens to the atomic radius of the neutral atoms?

   • A) Radius decreases because halogens become less metallic down the group
   • B) Radius increases because new electron shells are added down the group
   • C) Radius stays constant because halogens always have seven valence electrons
   • D) Radius decreases because nuclear charge decreases down the group

   Answer: Radius increases because new electron shells are added down the group

   Explanation: Moving down Group 17, each successive element gains an additional electron shell, increasing the distance from the nucleus to the outermost electrons and therefore increasing atomic radius.