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The identity of a chemical element is determined by which of the following?
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
An atom of phosphorus has an atomic number of 15 and a mass number of 31. How many neutrons does it contain?
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
Consider the species 72Zn, 75As and 74Ge. These species have
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
The mass of a single atom of a particular isotope is called which of the following?
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
Complete the following sentence: 'Different isotopes of the same element have...'
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
The neutral atoms of all of the isotopes of the same element have
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
Which of the following has a positive charge?
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
What is the chemical symbol for magnesium?
...the same number of protons and electrons, but differing numbers of neutrons
proton
15
Mg
Its atomic mass
The number of protons it possesses
the same number of electrons
the same number of neutrons.
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