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WorksheetsAtomic Theory and Electron Configurations
Total questions: 15
Worksheet time: 17mins
Choose the correct shortcut (Noble Gas) configuration for iodine.
[Ar]4s24d104p5
[Kr]5s24d105p5
[Xe]5s25d105p5
none of the above
How many valence electrons does Chlorine have?
5
1
7
6
How many Valence electrons does Strontium have?
1
2
3
4
What is wrong with this electron configuration?
1s22s22p63s23p64s23d104p65s25d105p4
nothing
3d10 should be 4d10
5d10 should be 4d10
5p4 should be 6s4
What element is this?
1s22s22p63s23p64s23d104p3
Germanium
Selenium
Arsenic
Gallium
Which of the following shows the correct order of Atomic Theory Timeline
Rutherford, Bohr, Dalton, Democritus, Thomson
Bohr, Democritus, Thomson, Rutherford, Dalton
Dalton, Thomson, Rutherford, Bohr, Democritus
Democritus, Dalton, Thomson, Rutherford, Bohr
Rutherford experimented with ____
Gold foil and alpha particles
Cathode rays and alpha particles
electron and alpha particles
gold foil and cathode rays
Which Scientist created the Planetary Model?
Democritus
Chadwick
Bohr
Rutherford
He claimed that matter was made of small, hard particles that he called “atomos.” He had no proof though.
Democritis
Dalton
Moseley
Einstein
What contribution did John Dalton make to atomic theory?
He discovered that every atom was positively charged.
He discovered that each element is unique and that they combine in small whole-number ratios
He discovered that atoms had nuclei.
He discovered that atoms could be divided into smaller parts.
