Elements in Group 1 readily combine with other elements in the atmosphere to form compounds that are often found in _______.the atmospheresoilsea waterrocks

The elements in Group 1 of the periodic table, known as alkali metals (which include lithium, sodium, potassium, rubidium, cesium, and francium), readily combine with other elements due to their high reactivity. These elements typically react with halogens to form salts and are particularly reactive with water, resulting in the production of hydroxides and hydrogen gas.

Given their properties and reactivity, these alkali metals often form compounds that are commonly found in seawater. For instance, sodium (Na) and potassium (K) are prevalent in seawater in the form of sodium chloride (table salt) and various other ionic compounds.

Thus, the correct answer to complete the statement would be: seawater.