Chemistry, 19.07.2019 11:30 mervesena01

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

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The question is incomplete. Complete question is:
Which list represents the classification of the elements nitrogen, neon, magnesium, and silicon, respectively?
(1) metal, metalloid, nonmetal, noble gas
(2) nonmetal, noble gas, metal, metalloid
(3) nonmetal, metalloid, noble gas, metal
(4) noble gas, metal, metalloid, nonmetal

The correct answer is option 2) nonmetal, noble gas, metal, metalloid

Reason:
1) Non-metal are bad conductors of electricity. Also non-metal are electronegative in nature. Hence, among the provided elements, nitrogen satisfied the criteria. Hence, it is a non-metal.

2) Noble gas are the elements which have completely filled outermost shell. Hence, among the provided elements, Neon satisfied the criteria.

3) Metal are good conductors of electricity. Also metal are electropositive in nature. Hence, among the provided elements, magnesium satisfied the criteria. Hence, it is a metal.

4) Metalloid have conductivity better than non-metals but poor than conductors. Hence, among the provided elements, Silicon satisfied the criteria. Hence, it is a metalloid.

Answer from: BigElote

The periodic table is the systematic representation of elements. It groups the metals, metalloids, noble gases, and non-metals systematically. The correct list of elements is represented as:

Option 2: nonmetal, noble gas, metal, metalloid

The elements can be classified as:

Magnesium is a metal, with the chemical symbol and atomic numbers Mg and 12. The element is basic in nature and forms oxide. Metals have high melting points and are good conductors of electricity, for example, Mg and Na. Noble gases are the colorless and odorless elements, which exhibit extremely low reactivity or are inert. Examples of noble gases are neon, krypton, and argon. Non-metals are element is the bad conductors of heat and electricity. They are not shiny and are brittle. Examples of non-metals are nitrogen, chlorine, and fluorine. Metalloids are the mixtures of metals and non-metals, which exhibit the properties of both. An example of a metalloid is silicon.

Therefore, the nonmetal, noble gas, metal, and metalloids are nitrogen, neon, magnesium, and silicon, respectively.

To know more about metals and non-metals, refer to the following link:

link

Answer from: Quest

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

Answer from: Quest

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

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