17 Questions
What is the defining characteristic of a d-block element?
Outermost electron in a d-orbital
Which of the following elements is NOT classified as a transition metal?
Zinc
In the electron configuration of Zinc (Zn), how are the d-orbitals filled?
Completely filled for both the atom and the ion
What is the general order followed when writing electron configurations for transition metals?
4s before 3d
In which sublevel are the electrons placed singularly before being paired?
d-sublevel
Which element violates the usual rule of having one unpaired electron in the 4s orbital?
Copper
When considering electron spins, what must be true for electrons in the same orbital?
They must have opposite spins
Which of the following elements shows a different electron configuration in its ion form compared to its neutral atom form?
Silver
Which element has a half-filled 3d subshell in its electron configuration?
Chromium
What is the electron configuration of Copper (Cu)?
[Ar] 4s1 3d10
When do covalent bonds form?
When orbitals overlap with each other
What type of bond is formed when p-orbitals overlap "side-to-side"?
Pi (π) bond
In electron configurations, what does [Ne] represent?
Neon
What is the electron configuration of Cobalt (Co2+)?
[Ar] 4s2 3d7
Which element violates the usual rule by having a different electron configuration in its ion form compared to its neutral atom form?
Copper
What is the electron configuration of Fe3+?
[Ar] 3d5
Which element has the electron configuration [Kr]5s24d105p5?
Bromine (Br)
Test your knowledge of electron configurations by determining the electron configuration of O2- and Na+ ions. Learn how to adjust electron configurations when ions gain or lose electrons. Explore limitless opportunities to understand electron configurations in chemistry.
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