Ascientific theory can never be disproven.
a. t
b. f

The correct answer is B. False

Explanation:

A scientific theory is an accepted explanation or model about a specific phenomenon and that is created based on the Scientific Method, this implies before a scientific theory is created scientist need multiple evidence and experiments. Despite this, scientific theory as any other element in science can be disproved if scientists find new evidence that contradicts or changes the theory previously proposed. For example some centuries ago scientist and academics believed the Earth was flat, but due to new evidence and discoveries, this theory was disproven. Thus, it is false a scientific theory can never be disproven because new evidence can disprove almost any scientific theory.

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.