How many 5d orbitals are present in an atom?

• A. 10
• B. 2
• C. 7
• D. 5

Answer: (D)

Verified step by step guidance

1. Recall that the number of orbitals in a given subshell is determined by the azimuthal quantum number \( l \). For d orbitals, \( l = 2 \).
2. The number of orbitals for a given \( l \) is given by the formula \( 2l + 1 \).
3. Substitute \( l = 2 \) into the formula: \( 2(2) + 1 = 5 \).
4. This means there are 5 orbitals in any d subshell, including the 5d subshell.
5. Therefore, the 5d subshell contains 5 orbitals.