3. The scientist who conducted the asthma experiment came up with a better method of determining whether air pollution was the main factor that caused asthma. He could
produce the fumes that contributed to smog and pump them into one of the rural schools
every day for one year to see if more children developed asthma. Would this be an ethical
experiment? Why or why not? (2 points)

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

може ли да зареждате повече информация, моля

here are some of the ways in which chemical and nuclear reactions differ.

explanation:

4d^55s^1 ( third choice)