What element has 7 Valence Electron and 3 energy levels?
Ah, let me put on my clown nose and give you a funny answer! The element you're talking about is a real "trickster" on the periodic table. It's Nitrogen! And you know what they say about Nitrogen? It's like that friend who always seems to have enough energy to keep the party going with its 3 energy levels! So, next time you see Nitrogen, just remember it's the life of the periodic table party!
The element with 7 valence electrons and 3 energy levels is nitrogen (N).
To determine the element that has 7 valence electrons and 3 energy levels, you need to refer to the periodic table. The periodic table provides valuable information about the elements, including their atomic number, electron configuration, and energy levels.
First, let's look for an element with 3 energy levels. Energy levels correspond to the period numbers in the periodic table, so we are looking for an element in the third period.
Now, let's find an element with 7 valence electrons. Valence electrons are the electrons in the outermost shell or energy level of an atom. To determine the number of valence electrons, look at the group number of the element. Group numbers range from 1 to 18 on the left-hand side of the periodic table.
After consulting the periodic table, we find that the element with 7 valence electrons and 3 energy levels is Chlorine (Cl). Chlorine is located in the third period and the 17th group of the periodic table. It has an atomic number of 17, which means it has 17 electrons. To find the number of valence electrons, subtract the number of electrons in the previous energy levels (2 and 8). Chlorine has 7 valence electrons because its electron configuration is 2,8,7.
Therefore, Chlorine (Cl) fits the criteria of having 7 valence electrons and 3 energy levels.
Would that be Cl?
1s2 2s2 2p6 3s2 3p5.
The energy levels; i.e., 1,2,3
7 electrons in the outside shell; i.e., 3s2 3p5