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In physics, the concept of a 4th spatial dimension is often used in theoretical models such as string theory to explain certain phenomena. However, it is important to note that we do not directly perceive or experience a 4th spatial dimension in our everyday lives. It remains a theoretical construct that helps explain certain aspects of the universe.

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Q: Is that 4d exist or not?
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What is the symbol of the first element to have an electron in the 4d sublevel in its ground state?

The symbol of the first element to have an electron in the 4d sublevel in its ground state is Yttrium, symbolized as Y, with the electron configuration [Kr] 4d^1 5s^2.


Why does one electron in a rubidium atom occupy a 5s orbital rather than a 4d or 4f orbital?

The 5s orbital has a lower energy level than the 4d or 4f orbitals in a rubidium atom, according to the aufbau principle. Electrons fill orbitals starting from the lowest energy level to the highest energy level. This is why the electron fills the 5s orbital before the 4d or 4f orbitals in a rubidium atom.


What is the noble gas configuration of iodine?

The noble gas configuration of iodine (I) is [Kr] 5s^2 4d^10 5p^5. This means that it has the same electron configuration as krypton (Kr) with additional electrons filling the 5s, 4d, and 5p orbitals.


What is the electron pairing in the 5s and 4d orbitals of strontium?

In strontium, the electron configuration is [Kr] 5s^2 4d^2. The pairing of electrons in the 5s orbital is due to Hund's rule, which states that electrons fill empty orbitals before pairing up. The 4d orbitals can accommodate up to 10 electrons, with the first 2 occupying separate orbitals before pairing starts.


Electronic coniguration of dblock element-technetiun?

The electronic configuration of technetium is [Kr] 4d^5 5s^2. This means that technetium has 5 electrons in its 4d orbital and 2 electrons in its 5s orbital.