Which element has a larger atomic radius than sulfur? chlorine cadmium fluorine oxygen

Atomic radius:  

In the periodic table from left to right moving atomic radius decreases because the effective nuclear charge increases which attract valance electron tightly and move towards nucleus also, as the result the size of atom decreases.

In the periodic table; in any group the size of atom increase with moving down because orbital sizes increases due to successive increases in principal quantum levels.

Cadmium has a larger atomic radius than sulfur because it present left and down in the periodic table as compare to sulfur

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).