Table of Contents
- 1 What element has 3 valence electrons and 3 energy levels?
- 2 What is an element with 3 valence electrons?
- 3 What element has 4 shells and 3 valence electrons?
- 4 What element has 3 full energy levels?
- 5 How many valence electrons does an element have?
- 6 How many electrons are in the third row of the periodic table?
What element has 3 valence electrons and 3 energy levels?
BORON FAMILY: All have 3 VALENCE ELECTRONS (electrons in the outer energy level) Boron is a METALLOID. The rest are metals.
What is an element with 3 valence electrons?
The number of valence electrons
| Periodic table group | Valence Electrons |
|---|---|
| Group 13 (III) (boron group) | 3 |
| Group 14 (IV) (carbon group) | 4 |
| Group 15 (V) (pnictogens) | 5 |
| Group 16 (VI) (chalcogens) | 6 |
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.
Which element has 3 energy levels and 7 valence electrons?
For an element to have three occupied energy levels and 7 valence electrons, it must be on row three and in group 17 or group VIIA. Again, you find chlorine, Cl.
What element has 4 shells and 3 valence electrons?
Scandium atomic number 21 is in the fourth period. s, p and d . 1st , 2st , 3rd and 4th . for a total of 3 valance electrons.
What element has 3 full energy levels?
Sodium
Sodium is in the third period, so it has three energy levels. As the number describing the energy level increases, the energy of that level also increases. Next, each energy level has sublevels, or subshells, which contain different atomic orbitals.
Which element has 2 energy levels and 7 valence electrons?
| Element | Element Number | Number of Electrons in each Level |
|---|---|---|
| Beryllium | 4 | 2 |
| Boron | 5 | 2 |
| Carbon | 6 | 2 |
| Nitrogen | 7 | 2 |
Which is element has 3 energy levels and 5 valence?
Educators go through a rigorous application process, and every answer they submit is reviewed by our in-house editorial team. 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.
How many valence electrons does an element have?
Groups 3-12, the transition metals, have 2 valence electrons (most of them) but some have d electrons that may be involved in bonding too. Group 13 elements have 3 valence electrons. Group 14 elements have 4 valence electrons. Group 15 elements have 5 valence electrons. Group 16 elements have 6 valence electrons.
How many electrons are in the third row of the periodic table?
8 elements in the second row, 8 electrons in the second orbit. 8 elements in the third row, 8 electrons in the third orbit. The fourth and fifth orbits would therefore hold 18 electrons. For most chemists the Bohr model does not work well beyond the third row of the periodic table because the model become quite oversized and bulky.
What is the symbol of the element that has three?
The only tricky part is you have to skip the transition metals (the middle group). The trend picks up again on column 13, those elements have 3 valence electrons, group 14 has 4 valence electrons, group 15 has 5 valence electrons, group 16 has 6 valence electrons, and group 17 has 7 valence electrons.