Quick Answer: Why Can Sulfur Have More Than 8 Valence Electrons?

Why can Sulfur hold more than 8 valence electrons?

Its structure is Here the sulfur atom has six electron pairs in its valence shell.

An atom like phosphorus or sulfur which has more than an octet is said to have expanded its valence shell.

This can only occur when the valence shell has enough orbitals to accommodate the extra electrons..

Can fluorine have more than 8 electrons?

If we arrange the atoms and electrons symmetrically, we obtain a structure with six bonds to sulfur; that is, it is six-coordinate. Each fluorine atom has an octet, but the sulfur atom has 12 electrons surrounding it rather than 8.

What does it mean if an element has 8 valence electrons?

Atoms of group 18 elements have eight valence electrons (or two in the case of helium). These elements already have a full outer energy level, so they are very stable. As a result, they rarely if ever react with other elements. … Therefore, it is very reactive and gives up electrons in chemical reactions.

Why is 3rd shell 8 or 18?

The third shell of an atom has 18 electrons only not 8 electrons. You might be confused because first the electrons of 4s are filled and then the 10 electrons of 3d shells are filled. They are filled because of the n-l rule. … So after filling the 3s and 3p subshell with 8 electrons, the next shell to fill is the 4s one.

How many valence electrons can Sulfur hold?

12 electronsNow sulfur has 6 unpaired electrons which means it can form 6 covalent bonds to give a total of 12 electrons around its valence shell. So in addition to being octet, sulfur can expand octet to have 10 or 12 electrons.

Which elements can hold more than 8 valence electrons?

Sulfur, phosphorus, silicon, and chlorine are common examples of elements that form an expanded octet. Phosphorus pentachloride (PCl5) and sulfur hexafluoride (SF6) are examples of molecules that deviate from the octet rule by having more than 8 electrons around the central atom.

What violates the octet rule?

The octet rule is violated whenever a bonded atom has either fewer or more than eight valence electrons in its valence shell. BH₃ has only six valence electrons around B. The B atom has an incomplete octet.

Why does boron only need 6 valence electrons?

Boron has a charge of 5. This is balanced by 5 electrons. … The valence electrons may participate in bonding through sharing with other atoms, to make three bonds. Three bonds = six electrons.

Why are there only 8 electrons in the outer shell?

The shells of an atom cannot accommodate more than 8 electrons, even if it has a capacity to accommodate more electrons. This is a very important rule called the Octet rule. According to this rule, atoms gain, loose or share electrons to achieve the stable configuration similar to the nearest noble gas.

Can nitrogen have 10 valence electrons?

No formal charge at all is the most ideal situation. An example of a stable molecule with an odd number of valence electrons would be nitrogen monoxide. Nitrogen monoxide has 11 valence electrons (Figure 1). … Lewis dot structure for the NO+ ion with ten valence electrons.

Why can phosphorus make 5 bonds?

Simple answer: hybridization. Phosphorus only ‘needs’ three more electrons to get a full valence shell of eight, but you’ll notice that it actually has five valence electrons, so in theory all of these could bond. … When bonding five times, the s-, p-, and d-orbitals actually fuse to create a hybrid dsp 3 orbital.

Do all atoms want 8 valence electrons?

The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds. When discussing the octet rule, we do not consider d or f electrons.

Can sulfur have more than 8 valence electrons?

Unlike atoms from periods one and two that only have the s and p orbitals (total of 8 valence electrons), atoms like phosphorus, sulfur, and chlorine can have more than 8 electrons because they are not restricted to the s and p orbitals and have a d orbital for additional electrons needed for bonding.

Why does sulfur have 10 valence electrons?

Sulfur can follow the octet rule as in the molecule SF2. Each atom is surrounded by eight electrons. It is possible to excite the sulfur atom sufficiently to push valence atoms into the d orbital to allow molecules such as SF4 and SF6. The sulfur atom in SF4 has 10 valence electrons and 12 valence electrons in SF6.

Can an atom make 8 bonds?

The ability to use the d subshell is what makes it possible for atoms to go beyond the octet, and it’s also why atoms up to the second period cannot do that. For that same reason, six or seven bonds are possible, and Xenon can form 8 covalent bonds in the compound XeO4!