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Sodium has an atomic number of 11 and a mass number of 23. How many neutrons would be in an atom of Sodium?
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
The atomic number is the number of _____________ in one atoms of an element.
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
What does the nucleus of an atom contain?
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
Horizontal rows in the periodic table are called —
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
What particle has a neutral charge and is found in the nucleus of an atom?
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
Two or more elements chemically combine together to form —
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
The ________________ of an element is the average mass of an element's naturally occurring atoms.
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
Fluorine has an atomic number of 9 and an atomic mass of 18.998. How many protons does an atom of fluorine have?
periods
protons
Neutron
12
9
a compound
protons and neutrons
Atomic Mass
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