Which element is a metalloid? Check all that apply. selenium (Se) polonium (Po) silicon (Si) iodine (I) tin (Sn) antimony (Sb) p
hosphorus (P)
2 answers:
The metalloids are highlighted in the table.
Of the elements in the question, the following are metalloids...
<span>antimony (Sb)
</span><span>silicon (Si)
</span><span>polonium (Po)
</span>
Of the elements in the question, the following are metalloids...
<span>antimony (Sb)
</span><span>silicon (Si)
</span><span>polonium (Po)
</span>
Answer: Polonium (Po), Silicon (Si), Antimony(Sb)
Explanation: Metalloids are the elements which exhibits some properties of both metals and non-metals. They are generally called as semi-metal. There are in total 7 metalloids in whole periodic table. They are:
Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Telurium (Te) and Polonium (Po).
From, the list and periodic table attached, it is visible that only Silicon, Polonium and antimony are the metalloids from the elements given.
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Answer:
Pentan-2-ol
Explanation:
On this reaction, we have a <u>Grignard reagent</u> (ethylmagnesium bromide), therefore we will have the production of a <u>carbanion</u> (step 1). Then this carbanion can <u>attack the least substituted carbon</u> in the epoxide in this case carbon 1 (step 2). In this step, the epoxide is open and a negative charge is generated in the oxygen. The next step, is the <u>treatment with aqueous acid</u>, when we add acid the <u>hydronium ion</u> () would be produced, so in the reaction mechanism, we can put the hydronium ion. This ion would be <u>attacked by the negative charge</u> produced in the second step to produce the final molecule: <u>"Pentan-2-ol".</u>
See figure 1
I hope it helps!
