Four sub-shells: s, p, d, f . Only artificially / theoretically in quantum mechanics there is a 5th sub shell 'g' and maybe 'h' is the 6th
The second shell of an atom has two sub-shells: the 2s and 2p sub-shells. The 2s sub-shell can hold a maximum of 2 electrons, while the 2p sub-shell can hold a maximum of 6 electrons, allowing the second shell to accommodate a total of 8 electrons.
Elements in period 5 of the periodic table have a total of four sub-shells: s, p, d, and f. The electron configuration of these elements includes the 5s, 5p, and 4d sub-shells, with the 4f sub-shell being filled in the subsequent period (period 6). Therefore, the total number of sub-shells available for elements in period 5 is four.
The Earth's core is the largest of the four shells and contains three sub-layers: the inner core, outer core, and mantle. The core is mainly composed of iron and nickel and is responsible for generating the planet's magnetic field.
Curium has seven electron shells.
Yttrium has five electron shells.
3
3
4 s , p , d , 7
NO!
Elements in period 5 of the periodic table have a total of four sub-shells: s, p, d, and f. The electron configuration of these elements includes the 5s, 5p, and 4d sub-shells, with the 4f sub-shell being filled in the subsequent period (period 6). Therefore, the total number of sub-shells available for elements in period 5 is four.
Numbers, according to shells and sub-shells which could be octets or duets.
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As you go from s to p to d and then to f, you get further from the nucleus.
's', 'p' and 'd'
The Earth's core is the largest of the four shells and contains three sub-layers: the inner core, outer core, and mantle. The core is mainly composed of iron and nickel and is responsible for generating the planet's magnetic field.
Curium has seven electron shells.
Technetium has five electron shells.