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Which type of formula shows an element symbol for each atom and a line for each bond between atoms?
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
Which statement describes the structure of an atom?
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
Which particle has the least mass?
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
What is the number of electrons in an atom of scandium?
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
In which type of reaction can two compounds exchange ions to form two different compounds?
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
Which electron transition in an excited atom results in a release of energy?
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
On the Periodic Table, the number of protons in an atom of an element is indicated by its
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
At STP, two 5.0-gram solid samples of different ionic compounds have the same density. These solid samples could be differentiated by their
The nucleus has a positive charge and is surrounded by negatively charged electrons.
21
atomic number
solubility in water
fourth shell to the second shell
an electron
double replacement
structural
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