Which description of an element is incorrectly matched with its location in the periodic table? (LO 2.5–2.6)

(a) Element 3—An element in the transition metal group that is a good conductor of electricity. (b) Element 2—An element that is in the halogen group and does not conduct electricity. (c) Element 4—An element in alkali metal group that is found in its pure form in nature. (d) Element 1—An element that is a solid at room tempera-ture, brittle, and a poor conductor of electricity.

Video transcript

Hello everyone today we are being asked the following question, identify the element that is correctly described based on the periodic table shown below. So first we're gonna go through these answer choices and see which one is correct. ACES Element four is a halogen that is a good electrical and thermal conductor. Well Element four right here is actually a noble gas and noble gasses are inert and that just means low reactivity. So Andrew choice A is not going to be our answer answer choice B says element one an alkaline earth metal that has not found in nature in its pure state. And so this is actually going to be our correct answer answer choice B. Element one is indeed an alkaline earth metal As in it is in group two a. And it is not found in nature in its pure state. Going to the rest of these answer choices and the choice C says that element three is a transition metal. That is incorrect. Transition metals are strictly found, they're going to be marked in red here, transition metals are found in the middle of the periodic table and that is not element three an element to, says an alkali metal that has a very low chemical reactivity and that's not true because element two is actually a transition metal, not an alkali metal. And so with that we've answered the question overall, I hope this helped and until next time