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WorksheetsElectrons & Naming (Wednesday)
Total questions: 10
Worksheet time: 19mins
Which electron configuration represents the electrons in an atom of sulfur in an excited state?
2-8-6
2-7-7
2-8-7
2-7-8
Which elements are present in this mixture?
A and X
A and Z
D and X
D and Z
Compared to the energy of an electron in the second shell of an atom of sulfur, the energy of an electron in the
first shell is lower.
first shell is the same.
third shell is lower.
third shell is the same.
Each line in the spectra represents the energy
absorbed as an atom loses an electron
absorbed as an atom gains an electron
released as an electron moves from a lower energy state to a higher energy state
released as an electron moves from a higher energy state to a lower energy state
Which Lewis electron-dot diagram represents a fluoride ion?
An atom of an element has a total of 12 electrons. An ion of the same element has a total of 10 electrons. Which statement describes the charge and radius of the ion?
The ion is positively charged and its radius is smaller than the radius of the atom.
The ion is positively charged and its radius is larger than the radius of the atom.
The ion is negatively charged and its radius is smaller than the radius of the atom.
The ion is negatively charged and its radius is larger than the radius of the atom.
What is the chemical name of the compound NH4SCN?
ammonium thiocyanate
ammonium cyanide
nitrogen hydrogen cyanide
nitrogen hydrogen sulfate
Which term represents the fixed proportion of elements in a compound?
atomic mass
molar mass
chemical formula
density formula
In the formula XSO4, the symbol X could represent the element
Al
Ar
Mg
Na
What is the IUPAC name for the compound ZnO?
zinc oxide
zinc oxalate
zinc peroxide
zinc hydroxide
