Nexelia — AI-Powered Cambridge A Level Revision

Theme

Shortcuts:A–D select ·Enter next ·H hint

0 / 20 correct

Question 1 of 20

High🔁 appears oftenmedium

Atoms of element X have an atomic number of 17 and a mass number of 35. Atoms of element Y have an atomic number of 17 and a mass number of 37. Which statement correctly identifies X and Y and their relationship?

AI Tutor

Atomic Structure · Chemistry

Upgrade to Pro to upload images of your work.