Consider the model of the nitrogen atom. BEBE
P
N-7
Which electron configuration matches this model?
1s22s22p?
1s?2s22p3
1s²2s22p4

Define the kinetic molecular theory

Which is an example of a reversible physical change?

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.