Question 9 (1 point)
a neutral atom has an outer shell electron configuration of
2s22p. to which of the following groups of elements does
it belong?
oa halogens
ob alkali metals
os alkaline-earth metals
od noble gases
question 10 (1 point)

Which of the following reasons best explains why a scientist would want to replicate gregor mendel's pea plant experiment? a. to discover new aspects of the natural world b. to test the predictions of current theories c. to explain recently observed phenomena d. to test the conclusions of prior investigations