Q. A heavy element has atomic number $X\$and mass number $Y$. Correct relationship between $X$ and $Y$ is
A) $X\ \ Y$
B) $X\ \ Y$
C) $X\ \ Y$
D) $X\ \ Z\ (1\ \ Y)^{2}$
Explanation
(b)
A heavy element has atomic number $X$ and mass number $Y$.
The atomic number of heavy element is smaller than its mass number.
$i.e$., $X < Y$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.