Which element has the largest atomic radius?
as
n
p
sb

The correct answer is Sb.

Explanation:

The atomic radius increases in the periodical table as the period of the element increases and as its group decreases. As all the elements belong to the same group (15), we must evaluate the one that has more electrons, comparing its atomic number because as the number of electrons of an element grows, it grows its atomic radius. In this case, the one that has more electrons, and therefore more atomic radius is the Sb.

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answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.