Electronic Configuration
Chemistry ⇒ Atomic Structure and the Periodic Table
Electronic Configuration starts at 8 and continues till grade 12.
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Describe the difference between the electronic configuration of a neutral atom and its cation.
Describe the difference between the terms 'shell', 'subshell', and 'orbital' in the context of electronic configuration.
Explain why copper has an anomalous electronic configuration.
Explain why noble gases are chemically inert based on their electronic configuration.
Explain why the 4s electrons are removed before 3d electrons when transition metals form cations.
How many electrons are present in the 3rd shell (n=3) of a phosphorus atom?
How many electrons are present in the 4d subshell of a cadmium atom (atomic number 48)?
A hypothetical element X has the electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6. What is the atomic number of X?
Which of the following elements has a completely filled d-subshell in its ground state?
(1) Copper
(2) Zinc
(3) Iron
(4) Chromium
Which of the following elements has a half-filled p-subshell in its ground state?
(1) Nitrogen
(2) Oxygen
(3) Fluorine
(4) Neon
Which of the following elements has the electronic configuration [Ne] 3s2 3p4?
(1) Sulfur
(2) Phosphorus
(3) Chlorine
(4) Argon
Which of the following elements has the highest number of unpaired electrons in its ground state?
(1) Carbon
(2) Nitrogen
(3) Oxygen
(4) Fluorine
Fill in the blank: The electronic configuration of Fe2+ (atomic number 26) is _______.
Fill in the blank: The electronic configuration of the fluoride ion (F-) is _______.
Fill in the blank: The electronic configuration of the N3- ion is _______.
Fill in the blank: The maximum number of electrons that can be accommodated in a d-subshell is _______.
True or False: According to Hund's rule, electrons fill degenerate orbitals singly before pairing up.
True or False: The 2d orbital exists in atoms.
True or False: The electronic configuration of an atom determines its chemical properties.
True or False: The electronic configuration of chromium is [Ar] 4s1 3d5.
