the ionic radii of the ions s2–, cl–, and k are 184, 181, 138 pm respectively. explain why these ions have different sizes even though they contain the same number of electrons.

the answer is b, have negligible mass

heats surface water up

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.