Question

Based on periodic trends alone, is P or Kr bigger?
1) P
2) Kr

Answer 1

Kr is bigger than P based on periodic trends.

Step-by-step explanation:

Based on periodic trends, Kr is bigger than P.

In terms of atomic radius, the trend is that atomic radius increases as Z increases down a group and decreases as Z increases across a period. Since Kr is below P in the periodic table, it has a larger atomic radius.

For example, the atomic radius of Kr is larger than the atomic radius of P because Kr is located below P in the same period.