Compounds such as butane and isobutane that have the same molecular formula but differ in the order in which the atoms are connected are called a. trans isomers

b. cis isomers

c. conventional isomers

d. constitutional isomers​

One compound, called n-butane, where the prefix n- represents normal, has its four carbon atoms bonded in a continuous chain. The other, called isobutane, has a branched chain. Different compounds that have the same molecular formula are called isomers.

d. constitutional isomers​

Explanation:

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answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

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