Answer:
d
Explanation:
you have to divide by the square root and then use the factorial to multiply
no, it not useless. we still learn Bohr's model in HS n dats almost 200 yr old! while there may be new models, previous one is good for explaining the basics. it is also useful to learn previous model n see how our understanding improves over time.
Hi my dear friend,
2m*30 = 60m
~Thank you
soil
