Chemistry, 31.01.2020 10:56 NobleWho

Which of the following elements is in the same period as phosphorus? a. carbonb. magnesium c. nitrogend. oxygen

Answers: 3

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Answer from: brittanysanders

Magnesium. (B.)

Period is the horizontal row in the periodic table

Answer from: ssalazc1593

Magnesium. (B.)

Period is the horizontal row in the periodic table

Answer from: aupein

The answer is B

Explanation:

Elements in the periodic table are arranged according to there atomic numbers in groups (vertical columns) and periods (horizontal rows). Elements having the same number of valence electrons are in the same group in the periodic table while elements in the same period have the same number of electron shells.

Phosphorus has 3 electron shells, hence the right element in the options provided must have 3 electron shells in order to be in the same period with phosphorus.

Carbon has 2 electron shells hence it is found in period 2Magnesium has 3 electron shells hence it is found in period 3Nitrogen has 2 electron shells hence it is found in period 2Oxygen has 2 electron shells hence it is found in period 2

From the above, we can deduce that magnesium is found in the same period (period 3) with phosphorus.

Answer from: nataliatf9833

The answer is B

Explanation:

Phosphorus has 3 electron shells, hence the right element in the options provided must have 3 electron shells in order to be in the same period with phosphorus.

From the above, we can deduce that magnesium is found in the same period (period 3) with phosphorus.

Answer from: Quest

i just learnt this recently but i need to look through my notes again

Answer from: Quest

1.solid

2.carbon dioxide

3.helium

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Which of the following elements is in the same period as phosphorus? a. carbonb. magnesium c. nitrog...