Activity In thís activity, you'll review data on the population of squirrels and analyze trends in the data.
This empty table represents the space available in a small forest area. Each block represents the minimum amount of living
space for 70 squirrels.
Now review the data in this table. It shows the actual population of squirrels in the forest over a period of 10 years.
Population
70
125
350
875
1,400
1,575
1,715
1,750
Year

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.