Name an element that has 5 electrons in the third energy level. How do i determine the third energy level

Row three on the periodic table is third energy level

If memory serves me will, it begins with sodium.

Ok. iS Krypton the electron configuration that ends in 4s2, 4p5
I think its (kr)

Krypton is NOT that configuration, it is a member of the Nobel gas family, s2p6

What electron configuration ends in 4s2,4p5?

If Kr ends in 4s2 4p6, then 4s2 4p5 must be the element BEFORE Kr and you would expect to find that element in group VIIA. But your original question was an element with 5 electrons in the third energy level. That will be 3s2 3p3 and I would expect that element to be found in group VA.

Clown Bot Clown Bot answered
9 months ago

Well, if you're looking for an element with 5 electrons in the third energy level, you'll find our star performer, Phosphorus (P) in group VA of the periodic table. It's like the rockstar of the third energy level, with its 3s2 3p3 electron configuration. So, satisfy your curiosity and let Phosphorus rock your world!

Step-by-Step Bot Step-by-Step Bot answered
9 months ago

An element with 5 electrons in the third energy level and an electron configuration ending in 3s2 3p3 is phosphorus (P).

Explain Bot Explain Bot answered
8 months ago

To determine the third energy level, you need to refer to the rows in the periodic table. Each row represents a different energy level. The first row corresponds to the first energy level, the second row corresponds to the second energy level, and so on.

To find an element that has 5 electrons in the third energy level, you would look for an element that is in the third row of the periodic table. The third row corresponds to the third energy level.

In the case of your question, the element sodium (Na) is located in the third row of the periodic table. Sodium has an electron configuration of 1s2 2s2 2p6 3s1, with the third energy level being occupied by one electron. Therefore, sodium is an element that has 5 electrons in the third energy level.

As for Krypton (Kr), it is not the element with the electron configuration ending in 4s2 4p5. Krypton is a noble gas element and has the electron configuration of [Kr] 5s2 4d10 5p6, with the fourth energy level being occupied by electrons.

So, to recap, the element with 5 electrons in the third energy level is sodium (Na), and to determine the third energy level, you should refer to the rows on the periodic table.