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In the fourth period of the periodic table, how many elements have one or more 4d electrons:
- a)2
- b)18
- c)0
- d)6
Correct answer is option 'C'. Can you explain this answer?
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In the fourth period of the periodic table, how many elements have one...
Answer:
In the fourth period of the periodic table, there are no elements that have one or more 4d electrons. This is because the fourth period corresponds to the n=4 energy level, which includes the 4s and 3d sublevels.
Explanation:
- The fourth period of the periodic table includes the elements potassium (K) through krypton (Kr).
- The 4s sublevel can hold up to 2 electrons, and the 3d sublevel can hold up to 10 electrons.
- Therefore, the elements in the fourth period can have up to 12 electrons in the n=4 energy level.
- However, none of the elements in the fourth period have any electrons in the 4d sublevel.
- The 4d sublevel comes after the 3d sublevel in energy, so it is not filled until the fifth period.
- Elements in the fifth period, such as niobium (Nb) and ruthenium (Ru), have electrons in the 4d sublevel.
- Therefore, the correct answer is option 'C', which states that there are no elements in the fourth period with 4d electrons.
In the fourth period of the periodic table, there are no elements that have one or more 4d electrons. This is because the fourth period corresponds to the n=4 energy level, which includes the 4s and 3d sublevels.
Explanation:
- The fourth period of the periodic table includes the elements potassium (K) through krypton (Kr).
- The 4s sublevel can hold up to 2 electrons, and the 3d sublevel can hold up to 10 electrons.
- Therefore, the elements in the fourth period can have up to 12 electrons in the n=4 energy level.
- However, none of the elements in the fourth period have any electrons in the 4d sublevel.
- The 4d sublevel comes after the 3d sublevel in energy, so it is not filled until the fifth period.
- Elements in the fifth period, such as niobium (Nb) and ruthenium (Ru), have electrons in the 4d sublevel.
- Therefore, the correct answer is option 'C', which states that there are no elements in the fourth period with 4d electrons.
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In the fourth period of the periodic table, how many elements have one...
The general electronic configuration of d block is (n-1) d ns since 4th period n-1=3 so the 4th period has no 4d electrons
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In the fourth period of the periodic table, how many elements have one or more 4d electrons:a)2b)18c)0d)6Correct answer is option 'C'. Can you explain this answer?
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