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What is the atomic number?
What is the mass number?
What is the atomic number of this atom?
What is the mass number of this atom?
Most of the mass in an atom is made up of _____________________?
In order for an atom to be neutral what has to be true?
Match each part of the following diagram below:
How is the number of neutrons in the nucleus of an atom calculated?
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
How many electrons does this atom have?
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
Where is most of the mass in an atom located?
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
What is the atomic number of the atom pictured?
Which of the following determines the identity of an element?
What are the two main parts of the atom?
Match the following with their correct charge.