Which elements can have more than 8 valence electrons?

Which elements can 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.

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

Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell. We can write the configuration of oxygen’s valence electrons as 2s²2p⁴.

Can nitrogen have more than 8 valence electrons?

The total number of valence electrons is 5+6=11. Therefore, no matter how electrons are shared between the nitrogen and oxygen atoms, there is no way for nitrogen to have an octet. It will have seven electrons, assuming that the oxygen atom does satisfy the octet.

Can noble gases have more than 8 valence electrons?

Noble gases are the least reactive of all known elements. That’s because with eight valence electrons, their outer energy levels are full. The only exception is helium, which has just two electrons.

Does Na+ have 8 valence electrons?

Valence electrons in Na+ means outermost electrons = 8.

Does Period 3 have 5 valence electrons?

The element that has three energy levels and five valence electrons in its outer level is phophorous, atomic number 15. Phosphorous is the 5th element from the left in the third period so it has five valence electrons.

What element has 4 shells and 5 valence electrons?

Carbon has 6 electrons — 2 in the first shell, and 4 in the second shell (so four valence electrons). Nitrogen has 7 electrons — 2 in the first shell, and 5 in the second shell (so five valence electrons). Oxygen has 8 electrons — 2 in the first shell, and 6 in the second shell (so six valence electrons).

Which element contains 5 valence electrons?

nitrogen

Which of these elements has 5 valence electrons?

Explanation: The elements of group 15 (column) VA of the periodic table all have electron configurations of s2p3, giving them five valence electrons. These elements include Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb) and Bismuth (Bi).

What is a period 2 nonmetal with 5 valence electrons?

I believe that the period 2 nonmetal with 5 valence electrons is the element nitrogen with symbol N. Nitrogen is found to have either 3 or 5 valence electrons and lies at the top of Group 15 on the periodic table.

What element has 2 orbitals and 5 valence electrons?

arsenic

How and why elements are arranged in 4th period?

The reason for the arrangement of elements in the period is based upon the atomic number. In all periods, including the elements are arranged according to the atomic number in increasing order.