Gallium has an abnormal value of atomic radius. why ?

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate