What are electron energy levels and valence electrons?

The maximum number of electrons at a given energy level depends on its number of orbitals. There are at most two electrons per orbital. Electrons in the outermost energy level of an atom are called valence electrons. They determine many of the properties of an atom, including how reactive it is.

What has 3 valence electrons and 4 energy levels?

BORON FAMILY: All have 3 VALENCE ELECTRONS (electrons in the outer energy level) Boron is a METALLOID. The rest are metals.

What has 3 energy levels and 1 valence electrons?

Sodium is represented by its symbol Na, and because it has one valence electron, that 3s electron, that electron is represented by a dot next to the symbol.

What are valence levels?

The valence electrons are the electrons in the outermost shell or last energy level of an atom. Valence electrons are electrons in the highest principal energy level. They are electrons that sit in the outermost shell of an atom. They are responsible for the chemical properties of each element.

What element has 6 energy levels and 4 valence electrons?


Atomic Number Element Energy Levels or “shells”
6 Carbon (C) 4
7 Nitrogen (N) 5
8 Oxygen (O) 6
9 Fluorine (F) 7

What element has 3 energy levels and 5 valence electrons?

The s and p orbitals of arsenic have 2 and 3 electrons respectively making 5 valence electrons. I hope this was helpful.

What has 4 valence electrons and 1 energy levels?

For instance, hydrogen, lithium, sodium, and potassium all have 1 electron on their outer energy level.

How many electrons are in the energy level?

Questions and Answers

Energy Level (Principal Quantum Number) Shell Letter Electron Capacity
1 K 2
2 L 8
3 M 18
4 N 32

What is valence energy?

n. An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.

What element has 7 valence electrons and 5 energy levels?

Fluorine has 7 Valence electrons.

What element has 4 energy levels and 5 valence electrons?

These elements include Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb) and Bismuth (Bi).

What element has 5 valence electrons and 4 energy levels?

How many valence electrons are there?

Four covalent bonds. Carbon has four valence electrons and here a valence of four. Each hydrogen atom has one valence electron and is univalent….The number of valence electrons.

Periodic table block Periodic table group Valence electrons
s Group 2 (II) (alkaline earth metals) and helium 2

Which elements have valence electrons in the second energy level?

Elements in the second row (lithium through neon) will have valence electrons in the second energy level with a principal quantum number of 2. The trend continues all the way down to the seventh row. Remember, those last two rows really belong squeezed into the sixth and seventh rows.

What is the relationship between valence electrons and energy levels?

The farther away the valence electrons are from the nucleus, the more energy an atom has. As you may have noticed, the row an element is in will represent the energy level the valence electrons will have. Elements in the first row (hydrogen and helium) will have outer electrons in the first energy level.

What is the difference between Valence and core electrons?

Valence and core electrons. Valence electrons are the electrons orbiting the nucleus in the outermost atomic shell of an atom. Electrons that are closer to the nucleus are in filled orbitals and are called core electrons. Valence electrons are the farthest from the positive charge (the protons) and thus tend to be easier to remove than core…

What determines the number of valence electrons in transition metals?

The transition metals are more difficult to determine the number of valence electrons. Some of their valence electrons are in the inner shells. The octet rule states that atoms tend to gain, lose, or share electrons so as to have eight electrons in their outer shell because this is more stable.