It's chromium. The element would have lost 2 electrons from the 4s subshell, leaving 3d4 as your valence.
On the periodic chart, the element with 5 electrons in its 3d orbital can be quickly identified. Elements with partially filled d-orbitals are located in the middle section, the "transitional metals." 3d is the first d-orbital, so we look in the first row of the middle section. This section fills the orbital by one more electron per element, so the one with 5 electrons is the fifth from the left.... Manganese! Atomic number 25.
Iron
The maximum number of electrons that can be found in the first energy level (or inner level) of an element is 2 electrons. This is because the first energy level only has one subshell, which can accommodate a maximum of 2 electrons.
The periodic table shows the atomic number of all elements. It shows that Mercury has 80 electrons and protons and if your really good with the elements you will be able to tell that it is a transition element.
An element cannot have 4 electrons in the 2 s level. The s subshell can hold only TWO electrons. Carbon has 4 electrons in the 2p level, however, if that's what you meant.
Terbium Tb
The notation "5s² 4d¹⁰ 5p³" represents the electron configuration of an element in the periodic table. It indicates that the element has two electrons in the 5s subshell, ten electrons in the 4d subshell, and three electrons in the 5p subshell. This configuration corresponds to the element Antimony (Sb), which is found in group 15 of the periodic table and has an atomic number of 51.
An element with 5 electrons in the third energy level has the electron configuration of 3s² 3p³. This indicates that there are 2 electrons in the 3s subshell and 3 electrons in the 3p subshell. The atomic number of this element is 15, which corresponds to phosphorus (P).
Manganese
Fluorine (F) is the most electronegative element because it has 5 electrons in it's 2p subshell. The optimal electron configuration of the 2p subshell has 6 electrons. Since F is close to this optimal configuration, electrons are highly attracted to the nucleus.
An inner transition metal with fourteen 4f electrons is Lutetium (Lu), which has the atomic number 71. Lutetium is part of the lanthanide series and is the last element in that series, completing the filling of the 4f subshell. It is known for its high density and is used in various applications, including catalysts and phosphors.
Carbon is group 14 element and comes under p-block elements. It is because its last electrons fall into the p-subshell. Its electronic configuration is 1s22s22p2 . Transition elements are the elements of d-block.They are named so because their position in the Periodic Table lies between the s-block and p-block elements. They have their last electrons filled in the d-orbital.
ZINC, of course
On the periodic chart, the element with 5 electrons in its 3d orbital can be quickly identified. Elements with partially filled d-orbitals are located in the middle section, the "transitional metals." 3d is the first d-orbital, so we look in the first row of the middle section. This section fills the orbital by one more electron per element, so the one with 5 electrons is the fifth from the left.... Manganese! Atomic number 25.
The electron configuration Ar4s²3d⁷ corresponds to the element cobalt (Co), which has an atomic number of 27. In this configuration, "Ar" represents the noble gas argon, which accounts for the first 18 electrons. The 4s² indicates two electrons in the 4s subshell and the 3d⁷ indicates seven electrons in the 3d subshell, totaling 27 electrons for cobalt.
The element with five electrons in the third energy level (n=3) is phosphorus (P). In its electron configuration, phosphorus has the atomic number 15, with the distribution of electrons as 1s² 2s² 2p⁶ 3s² 3p³. Thus, it has five electrons in the third energy level (2 in the 3s subshell and 3 in the 3p subshell).
The electrons per shell in vanadium: 2, 8, 11, 2.