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WorksheetsElectron Configuration and Valence Electrons
Total questions: 15
Worksheet time: 15mins
How many valence electrons does Chlorine have?
5
2
7
5
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
Zinc
Copper
Nickel
Germanium
What electron configuration matches an oxygen atom?
1s22s22p63s2, 3p64s23d104p5
1s22s22p4
1s22s22p6
1s22s22p63s23p64s23d1
The electron configuration of an atom is 1s22s22p6. The number of electrons in the atom is
3
6
8
10
Which electron configuration belongs to Chlorine (Cl)?
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p7
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
Hund’s Rule
Aufbau Principle
Pauli Exclusion Principle
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
Neon
Magnesium
Aluminum
Potassium
How many valence electrons are represented here?
7
5
2
8
How many electrons can the d sublevel(orbital) hold?
8
10
2
4
What is this element?
Argon
Krypton
Selenium
Bromide
What is the electronic configuration of iron?
1s22s22p63s23p64s23d6
1s22s22p63s23p63d8
1s22p63s23p64s23d6
1s22s22p63s23p64s13d6
What does Pauli exclusion principle state ?
states that each electron occupies the lowest energy orbital available
states that -no two electrons in the same orbital can have the same spin
states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals
What is the electron configuration of a sulfur atom?
1s22s22p63s23p4
1s22s22p63s23p5
1s22s22p63s23p6
1s22s22p63s23p3
Which of the following elements has 5 valence electrons?
Carbon
Nitrogen
Oxygen
Fluorine
How many valence electrons are present in a silicon atom?
2
4
6
8
