Table of Contents
- 1 What element has 7 valence electrons and 2 orbitals?
- 2 Which of the following atoms would make the best conductor?
- 3 Has two electrons in outer or valence shell?
- 4 How many valence electrons are in a conductor atom?
- 5 How many electrons are in the nshell of an atom?
- 6 Why does helium have 2 valence electrons?
What element has 7 valence electrons and 2 orbitals?
The first energy level has 2 electrons located in the 1s-orbital and the second energy level, which in fluorine’s case is the outermost energy level, has 7 electrons, 2 in the 2s-orbital and 5 in the 2p-orbitals. This means that fluorine has a total of 7 valence electrons.
Is an atom with 7 valence electrons a conductor?
The conductivity of the atom depends on the number of electrons that are in the valence shell. When an atom has only one electron in valence shell, it is almost a perfect conductor. When an atom has eight valence electrons the valence shell is said to be complete and the atom is an insulator.
Which group has 2 electrons in the valence shell?
The number of valence electrons
| Periodic table group | Valence Electrons |
|---|---|
| Group 1 (I) (alkali metals) | 1 |
| Group 2 (II) (alkaline earth metals) | 2 |
| Groups 3-12 (transition metals) | 2* (The 4s shell is complete and cannot hold any more electrons) |
| Group 13 (III) (boron group) | 3 |
Which of the following atoms would make the best conductor?
Elements whose electrons can move more freely make good conductors. In general, most metals make good conductors because they only have one or two electrons in their outer band. Silver and gold are the best conductors.
What elements has 7 valence electrons?
Explanation: The halogens — fluorine, chlorine, bromine, iodine, astantine, and the recently made element 117 — are known also as Group 17 of the periodic table.
What electron configuration has 7 valence electrons?
The 3s23p5 electrons are the outermost electrons, so chlorine has seven valence electrons.
Has two electrons in outer or valence shell?
The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. In this table, you can see that helium has a full valence shell, with two electrons in its first and only, 1n, shell.
Can a conductor have 2 valence electrons?
Most commonly used electrical conducting material is aluminium and it has three valence electrons, and another metallic conductor is magnesium which has two valence electrons.
What family has 7 valence electrons?
halogen group
Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine.
How many valence electrons are in a conductor atom?
three
These are the electrons that are easiest to break loose from their parent atom. Normally, a conductor has three or less valence electrons, an insulator has five or more valence electrons, and semiconductors usually have four valence electrons.
What is the valence of conductor?
Atoms with 1 valence electron in their outer ring are considered to be the best conductors. Materials with atoms containing 2 or 3 valence electrons are still considered conductors.
Which element has 7 valence electrons and 3 shells?
Electrons
| Atomic Number | Element | Energy Levels or “shells” |
|---|---|---|
| 4 | Beryllium (Be) | 2 |
| 5 | Boron (B) | 3 |
| 6 | Carbon (C) | 4 |
| 7 | Nitrogen (N) | 5 |
How many electrons are in the nshell of an atom?
filled to capacity with a total of 28 electrons, so there is only one electron in the nshell. The outermost shell of an atom, the nshell in this case, is called the valence shell, and the number of electrons it
How many valence electrons do atoms share with each other?
One atom is more likely to interact with another atom if doing so will leave both with eight valence electrons. For this to happen, an atom either empties its partially filled valence shell, fills it with donated electrons, or shares electrons with other atoms.
How many unpaired electrons are in a silicon atom?
Here, the electron configuration of silicon (Si) shows that four unpaired electrons exist. Therefore, the valency (valence) of the silicon (Si) atom is 4. How many valence electrons does silicon ion have? After the electron configuration, the last shell (orbit) of the silicon atom has four electrons.
Why does helium have 2 valence electrons?
Because helium has two valence electrons, it too is stable and seldom bonds with other atoms. Hydrogen, on the other hand, has only one valence electron (see Figure 2.2), so it binds readily with other atoms. Octet Rule The atoms of most biologically important elements do not have eight electrons in their valence shells.