What is acceleration? A. a change in an object's direction only B. any change in an object's direction or rate of speed C. a movement in the forward direction only D. an increase in an object's rate of speed only

the role of the microscope world in creating new materials .

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

answer: i dont know the answer but this might

explanation:

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