nicholaswalkley
contestada

Which element has the same number of energy levels as krypton (Kr) and the same number of valence electrons as nitrogen (N) ?
iron (Fe)
selenium (Se)
arsenic (As) c
alcium (Ca)

Respuesta :

joseaaronlara

Answer:

The answer to your question is: Arsenic (As)

Explanation:

Krypton is a noble gas located in group VIII A and 4rd period. Nitrogen is in the 5fh group.

So, we must look for an element located in the 4rd period and group VA.

Iron (Fe)               Iron is in the 4rd period and group VI B

Selenium (Se)     Selenium is in the 4rd period and group VI A

Arsenic (As)       Arsenic is in the 4rd period and group V A and group VA

Calcium (Ca)     Calcium is located in group 4rd and group IIA

Answer:

The correct answer is the option: arsenic (As).

Explanation:

Hello!

Let's solve this!

Nitrogen is in group V period 2 and has 5 valence electrons.

The krypton is in period 4.

If we cross these two elements, the element that is in the same group as nitrogen (V) and in the same period as Kripton (4) is Arsenic. If you have any questions, we can check it on the periodic table.

We conclude that the correct answer is the option: arsenic (As).

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