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Worksheetselectron config.k level
Total questions: 16
Worksheet time: 26mins
The unknown emissions spectra belongs to the element
Hydrogen
Mercury
Neon
Sodium
Light is emitted when electrons
move from one atom to another.
collide with one another, releasing energy.
move from a lower energy level to a higher energy level.
move from a higher energy level to a lower energy level.
This could be the dot diagram of
Mg
Cl
C
O
Which of these is WRONG?
A
B
C
D
What is the electron configuration for Manganese?
1s22s22p63s2
1s22s22p63s23p64s24d5
1s22s22p63s23p64s23d5
1s22s22p63s23p64s24d10
This is a correct dot diagram for oxygen (O)
true
false
Which of the following elements has three valence electrons?
lithium
magnesium
gallium
arsenic
What is the noble gas configuration for Cobalt?
[Kr] 4s2 3d7
[Kr] 4s2 4d7
[Ar] 4s2 3d7
[Ar] 4s2 4d7
Which electron configuration belongs to a Chloride (Cl-) ion?
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p7
1s2 2s2 2p6 3p7
Which element is 1s2 2s2 2p6 3s2 3p6 4s1?
Sodium (Na)
Lithium (Li)
Potassium (K)
Calcium (Ca)
What is the electronic configuration of iron (Fe)?
