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Which list represents the classification of the elements nitrogen, neon, magnesium, and silicon, respectively?

A. nonmetal, noble gas, metal, metalloid
B. noble gas, metal, metalloid, nonmetal
C. nonmetal, metalloid, noble gas, metal
D. metal, metalloid, nonmetal, noble gas

Answer :

The element nitrogen is a non metal in 15th group, neon is a noble gas in 18th group and magnesium is metal and silicon is a metalloid. Hence, option A is correct.

What are metals ?

In periodic table, the electropositive elements are called metals. They are located in the very left side and middle of the table. Thus metals are located in the s- block and d- block of periodic table.

From group 13 to 18 elements are broadly classified as non-metals. Group 18 represent the noble gases such as neon. Some elements shows the properties of both metals and non metals an they are called metalloids. Silicon , germanium etc. are metalloids.

Therefore, the element nitrogen is a non metal neon is a noble gas and magnesium is metal and silicon is a metalloid. Hence, option A is correct.

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Answer:

A

Explanation:

Nitrogen is a reactive nonmetal. That leaves A or C, neon is a noble gas, the rest make sense too. Magnesium is an alkaline earth metal. silicon is a metalloid.