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The d suborbitals begin at period 4, but the d-sublevel is actually 3d. The first element is scandium, which has the atomic number of 21.

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In the ground state the 3d and 4s sublevels of the chromium atoms atomic number 24 are represented as?

In the ground state of a chromium atom (atomic number 24), the electron configuration is [Ar] 3d^5 4s^1, with 5 electrons in the 3d sublevel and 1 electron in the 4s sublevel. This configuration is due to the stability achieved by half-filling the 3d sublevel before completely filling the 4s sublevel.


Which energy sublevel is being filled by the elements Y to Cd?

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.


What element completes the 4s sublevel?

The element that completes the 4s sublevel is calcium (Ca). It has the atomic number 20, which means it has 20 electrons. The electron configuration of calcium is (1s^2 2s^2 2p^6 3s^2 3p^6 4s^2), indicating that the 4s sublevel is filled after the 3p sublevel.


What chemical completes the 4s sublevel?

The 4s sublevel is completed by the element calcium, which has an atomic number of 20. In the electron configuration of calcium, the 4s sublevel is filled after the 3p sublevel, resulting in the configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s². Therefore, the completion of the 4s sublevel occurs when two electrons occupy it.


What is the first element that has enough electrons to begin placing in 3d sub level?

The first element that has enough electrons to begin placing in the 3d sublevel is scandium (Sc), which has an atomic number of 21. In its electron configuration, scandium is represented as [Ar] 3d¹ 4s², indicating that the 3d sublevel starts to fill after the 4s sublevel.

Related Questions

In the ground state the 3d and 4s sublevels of the chromium atoms atomic number 24 are represented as?

In the ground state of a chromium atom (atomic number 24), the electron configuration is [Ar] 3d^5 4s^1, with 5 electrons in the 3d sublevel and 1 electron in the 4s sublevel. This configuration is due to the stability achieved by half-filling the 3d sublevel before completely filling the 4s sublevel.


Why is argon the last element in its period?

Argon is the last element in its period (period 3) because it fills the 3p sublevel, which can hold a maximum of six electrons. After argon, the next element, potassium, begins filling the 4s sublevel in the next period (period 4).


Which energy sublevel is being filled by the elements Y to Cd?

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.


What element completes the 4s sublevel?

The element that completes the 4s sublevel is calcium (Ca). It has the atomic number 20, which means it has 20 electrons. The electron configuration of calcium is (1s^2 2s^2 2p^6 3s^2 3p^6 4s^2), indicating that the 4s sublevel is filled after the 3p sublevel.


What chemical completes the 4s sublevel?

The 4s sublevel is completed by the element calcium, which has an atomic number of 20. In the electron configuration of calcium, the 4s sublevel is filled after the 3p sublevel, resulting in the configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s². Therefore, the completion of the 4s sublevel occurs when two electrons occupy it.


What is the electron configuration for an element with 5 electrons in the 3d energy sublevel?

B. 1s22s22p63s23p64s23d5----Chromium: [Ar]1s22s22p63s23p63d54s1Manganese: [Ar]1s22s22p63s23p63d54s2


What is the first element that has enough electrons to begin placing in 3d sub level?

The first element that has enough electrons to begin placing in the 3d sublevel is scandium (Sc), which has an atomic number of 21. In its electron configuration, scandium is represented as [Ar] 3d¹ 4s², indicating that the 3d sublevel starts to fill after the 4s sublevel.


Is the atomic number how many atoms are in the element?

Not necessarily. The atomic number is the same amount as the protons found in a certain element. remember that the number of protons are equal to the number of electrons as well. EX - Calcium's atomic number is 20 so therefore there are 20 protons and 20 electrons in the element. The atomic number also helps you find any valence electrons EX- oxygen's atomic number is 8 so you have 2 electrons filling the 1st orbital and 6 filling the 2 orbital. but the 2nd orbital is supposed to have 8 electron so there are 6 valence electrons.


What is the element in Period 4 that has two electrons in the p sublevel name?

The element in Period 4 that has two electrons in the p sublevel is germanium (Ge). It has the atomic number 32 and is located in group 14 of the periodic table. In its electron configuration, germanium has the outermost electrons in the 4s and 4p sublevels, with the 4p sublevel containing two electrons.


Which set of elements has electrons added to the 4f sublevel as the atomic number increases?

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.


How many valence electrons would an element with atomic number 56 have?

The element with atomic number 56 is barium, a group 2 alkaline earth metal. Its atoms have two valence electrons in the 6s sublevel.


What is the atomic number of the first element to start filling an f sub-level?

The element cerium has a single electron in the 4f orbital. Its electron configuration is [Xe] 4f1 5d1 6s2.