Electronic Configuration
Chemistry ⇒ Atomic Structure and the Periodic Table
Electronic Configuration starts at 8 and continues till grade 12.
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Describe Hund's Rule of Maximum Multiplicity.
Explain why copper (Cu, atomic number 29) has an electronic configuration of [Ar] 4s1 3d10 instead of [Ar] 4s2 3d9.
Explain why the 4s orbital is filled before the 3d orbital.
How many electrons are present in the 2p subshell of a nitrogen atom (atomic number 7)?
How many electrons are present in the 3p subshell of phosphorus (atomic number 15)?
How many electrons are present in the valence shell of magnesium (Mg, atomic number 12)?
How many unpaired electrons are present in the ground state of nitrogen (atomic number 7)?
State the electronic configuration of a chloride ion (Cl-, atomic number 17).
Which of the following elements has a completely filled p-subshell in its ground state?
(1) Neon
(2) Oxygen
(3) Nitrogen
(4) Fluorine
Which of the following elements has the electronic configuration 1s2 2s2 2p6 3s2?
(1) Neon
(2) Magnesium
(3) Sodium
(4) Aluminum
Which of the following elements has the highest number of unpaired electrons in its ground state?
(1) Carbon
(2) Nitrogen
(3) Oxygen
(4) Fluorine
Which of the following ions has the same electronic configuration as argon?
(1) K+
(2) Ca2+
(3) Cl-
(4) All of the above
Fill in the blank: The electronic configuration of a fluoride ion (F-, atomic number 9) is ________.
Fill in the blank: The electronic configuration of a neutral atom with atomic number 10 is ________.
Fill in the blank: The electronic configuration of a neutral atom with atomic number 3 is ________.
Fill in the blank: The electronic configuration of a sodium ion (Na+) is ________.
True or False: The 2s and 2p orbitals belong to the same principal energy level.
True or False: The 4s orbital is filled before the 3d orbital.
True or False: The electronic configuration of an atom can be used to predict its position in the periodic table.
True or False: The electronic configuration of an atom determines its chemical properties.
