Which element has 3 valence electrons in the 4d sublevel?

Which element has 3 valence electrons in the 4d sublevel? a. v b. nb c. cu d. tl

Nb, the transition metal(d) subshell will always be n-1, meaning the 3d subshell will be in row(period) 4. So if it’s 4d then it is row(period) 5, and if it has 3 valence electrons then the element is located in column V, or the third column in the transition metal section.

The correct answer is Option B. Explanation: Valence electrons are defined as the electrons which are present in outermost shell of an atom. This is determined by the electronic configuration of an element. For the given options: Option A: Vanadium (V) The atomic number of this atom is 23 and number of electrons that are present are 23. The electronic configuration of vanadium is: This element does not have 3 electrons in 4d-subshell. Option B: Niobium (Nb) The atomic number of this atom is 41 and number of electrons that are present are 41. The electronic configuration of niobium is: This element have 3 electrons in 4d-subshell. Option C: Copper (Cu) The atomic number of this atom is 29 and number of electrons that are present are 29. The electronic configuration of copper is: This element does not have 3 electrons in 4d-subshell. Option D: Thallium (Tl) The atomic number of this atom is 81 and number of electrons that are present are 81. The electronic configuration of thallium is: This element does not have 3 electrons in 4d-subshell. Hence, the correct answer is Option B.

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aluminum also has them

boron Explanation: the elements in group 13 all have 3 valence electrons

Explanation: I think its boron because boron is no. 5 on the periodic table, and it has a two energy levels with three valence electrons

Answer 6

Niobium is the element your looking for.

Answer 7

That would be more Explanation:

The answer to your question is: letter A Explanation: If an atom lose 3 electrons its charge will be positive, it will be +3

The neutral atoms of the element have an oxidation number of 0. When the atoms loose their three valence electrons to form ions they then have an oxidation number of +3 Explanation:

three dots in the diagram

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