Admin What element has only 3 energy levels?
Sodium
Sodium is in the third period, so it has three energy levels.
What is the 3 energy level?
The third principal energy level has one s orbital, three p orbitals, and five d orbitals, which can each hold up to 10 electrons. This allows for a maximum of 18 electrons. The fourth and higher levels have an f sublevel in addition to the s, p, and d orbitals.
Which element has 3 electrons shells?
lithium atom
A lithium atom, for example, has three electrons. It has two in the first shell and one in the second shell.
What element has 2 energy levels and 3 valence electrons?
Lithium
| Element | Element Number | Number of Electrons in each Level |
|---|---|---|
| Helium | 2 | 2 |
| Lithium | 3 | 2 |
| Beryllium | 4 | 2 |
| Boron | 5 | 2 |
What element has 2 valence electrons and 3 energy levels?
| Element | Element Number | Number of Electrons in each Level |
|---|---|---|
| Helium | 2 | 2 |
| Lithium | 3 | 2 |
| Beryllium | 4 | 2 |
| Boron | 5 | 2 |
What element has 3 protons and 4 neutrons?
Notice that because the lithium atom always has 3 protons, the atomic number for lithium is always 3. The mass number, however, is 6 in the isotope with 3 neutrons, and 7 in the isotope with 4 neutrons. In nature, only certain isotopes exist.
What element has 3 energy levels?
The element that has three energy levels and five valence electrons in its outer level is phophorous , atomic number 15. Each row or period of the periodic table corresponds to a principal energy level.
What element has 3 energy shells?
THESE ARE THE ELEMENTS WITH THREE ELECTRON SHELLS Element #18 Argon This element is an odorless gas and one of the noble gases. This element also has three complete electron shells. Because it’s outer shell is complete it serves as a natural barrier in it’s astral aspect.
What metal has 3 valence electrons?
Gallium has three electrons in the outer energy level and therefore, it has three valence electrons. The identification of valence electrons is vital because the chemical behavior of an element is determined primarily by the arrangement of the electrons in the valence shell.