Question

1. on the periodic table, draw the arrow(s) for increasing atomic radius.
2. when comparing sulfur (s) to phosphorus (p), which element will have the bigger atomic radius?
3. explain the chemistry concept that causes the atomic radius to change across a period (left to right).

Explanation:

Step1: Analyze atomic radius trends

Atomic radius decreases across a period (left - to - right) because as the atomic number increases, the number of protons in the nucleus increases. This leads to a greater positive charge in the nucleus, which pulls the electrons closer.

Step2: Compare S and P

Sulfur (S) has an atomic number of 16 and phosphorus (P) has an atomic number of 15. They are in the same period (period 3). Since P is to the left of S in the periodic table, P has a larger atomic radius.

Answer:

Phosphorus (P) has a bigger atomic radius than sulfur (S).