PSYCHOLOGY What is TRUE about an experimental study? It must be conducted in a very natural environment. Researchers should avoid trying to control the setting. The resulting conclusions will always be reliable and replicable. Its variables have to mimic those of the real situation.

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

thats a little if u want the answer just look it up on google thats what i do haha : )

all eukaryotic cell have mitochondria : )