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The 4th energy level is the lowest that contains and f sub-level
The second quantum number (l) for the electrons in the 4 p energy sublevel of bromine would be 1.
The set of elements that has electrons added to the 4f sublevel as the atomic number increases are the lanthanide series elements, from cerium (Z = 58) to lutetium (Z = 71). The 4f sublevel can hold up to 14 electrons per element, hence as we move across this series, electrons are successively added to the 4f sublevel.
A horizontal row of blocks in the periodic table is referred to as a period. The sublevels in a period that contain 32 elements are s, p, d and f.
This statement is incorrect. In period 3 of the periodic table, elements have a varying number of electrons in their outermost energy level, ranging from 1 to 8 electrons.
The 4th energy level is the lowest that contains and f sub-level
The elements Y (Yttrium) to Cd (Cadmium) are filling the 4d energy sublevel. This range includes the transition metals from Yttrium (atomic number 39) to Cadmium (atomic number 48), where the 4d orbitals are progressively filled with electrons.
You would have to determine the electron configuration for atoms of a given element. Each s sublevel contains 1 orbital, each p sublevel contains 3 orbitals, each d sublevel contain 5 orbitals, and each f sublevel contains 7 orbitals. Click on the related link to see a periodic table that shows electron configurations for the elements.
The next highest energy atomic sublevel after 4p is the 5s sublevel. In the electron configuration of an atom, energy levels increase with increasing principal quantum number (n), so the 5s sublevel is higher in energy than the 4p sublevel.
for all elements, excluding hydrogen, there are 2 electrons in the first energy level. Hydrogen is the exception of this because it only has a single electron, thus it only has 1 in its first and only energy level.
The second quantum number (l) for the electrons in the 4 p energy sublevel of bromine would be 1.
The energy sublevel (s, p, d ,f) is always the same.
The set of elements that has electrons added to the 4f sublevel as the atomic number increases are the lanthanide series elements, from cerium (Z = 58) to lutetium (Z = 71). The 4f sublevel can hold up to 14 electrons per element, hence as we move across this series, electrons are successively added to the 4f sublevel.
A horizontal row of blocks in the periodic table is referred to as a period. The sublevels in a period that contain 32 elements are s, p, d and f.
This statement is incorrect. In period 3 of the periodic table, elements have a varying number of electrons in their outermost energy level, ranging from 1 to 8 electrons.
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l = 1