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Which Lewis electron-dot diagram represents an atom of nitrogen in the ground state?
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
What is the number of moles in a 78.8-gram sample of MgCO3 (gram-formula mass = 84.3 g/mol)?
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
A potassium atom has a mass number of 37. What is the number of neutrons in this atom?
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
Which compound has the strongest intermolecular forces at 60 kPa?
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
Which formula represents calcium hydride?
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
A potassium atom has a mass number of 37. What is the number of neutrons in this atom?
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
Which type of chemical reaction is represented by the equation?
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
Compared to the metals in Period 2, the nonmetals in Period 2 have
single replacement
ethanoic acid
higher first ionization energies and higher electronegativity values
10%
0.935 mol
18
CaH2
2
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