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10 questions
Who is the Greek philosopher that developed the idea about atoms in 500 BC?
Dalton
Plato
Aristotle
Democritus
What model of the atom replaced Bohr's model?
Heisenberg's model
Thomson's model
Rutherford's model
Quantum Mechanical model
Regions in which electrons are likely to be found is called
atomic orbitals
principal energy level
energy sublevel
spin
What atom matches this electron configuration? 1s22s22p63s23p64s23d10?
30Zn
29Cu
26Fe
40Zr
What is the electron configuration for a Sulfur atom (16S) ?
1s2 2s2 2p6 3p6
1s2 2s2 2p6 3s23p6
1s2 2s2 2p6 3s23p4
1s2 2s2 2p6 3s23d6
The electron configuration of an atom is 1s22s22p6. The number of valence electrons in the atom is
6
8
2
10
Given the Oxygen's electron configuration 8O 1s22s22p4, it will give us an idea that Oxygen belongs to group number___
2
4
6
8
In which period of the periodic table of elements would you find 26Fe with an electron configuration of 1s22s22p63s23p64s23d6,
3
4
5
6
How many valence electrons are represented here?
2
5
7
8
A region around the nucleus of an atom where an electron is likely to be moving is called
atomic orbital
principal energy level
energy sublevel
spin
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