How can an atom get 8 valence electrons?

Why? Referring to the octet rule, atoms attempt to get a noble gas electron configuration, which is eight valence electrons. Sodium has one valence electron, so giving it up would result in the same electron configuration as neon. Chlorine has seven valence electrons, so if it takes one it will have eight (an octet).

Why does valence shell have 8 electrons?

The Significance of “8” in Chemistry The rule of 8 or the Octet rule is the tendency of atoms to have eight electrons in their valence shell. Eight electrons in this final shell allow atoms to be stable and non-reactive. Atoms tend to be reactive when their valence shell (or outermost shell) is incomplete.

What conditions are required for an atom to have more than 8 electrons?

octet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level.

What happens 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.

Which of the following atoms can have more than 8?

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.

Which of the following atoms can have more than 8 outermost electrons?

Chlorine is your answer… 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.

What element has 8 electrons in their outer shell?

Similarly, neon has a complete outer 2n shell containing eight electrons. These electron configurations make helium and neon very stable.

Which of the following elements has 8 valence electrons?

Atoms of neon (Ne), argon (Ar), krypton (Kr), and xenon (Xe) have 8 valence electrons. These elements are nonreactive, or stable.

Which of the following atom can have more than 8 outermost electrons when it forms a covalent compound?

Which of the following atoms can have more than 8 outermost electrons when it forms a covalent compound a NB FC BD CL?

Answer: Only atoms with empty d orbital can achieve more than 8 electrons in a covalent bond.