Mario believes he has found the reason that some things glow in the dark while others do not. what is the most important thing he will need to do before his theory will be accepted by other scientists? a. create a petition and ask everyone who believes in his theory to sign it. b. develop experiments that can be repeated to test his theory. c. develop an online survey so people can vote on the accuracy of his theory. d. write a book promoting his theory.

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

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

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