1). Which subatomic particles are found in the nucleus of the atom? Enter the su

Question

1). Which subatomic particles are found in the nucleus of the atom? Enter the subatomic particle or particles separated by commas.
2). The atomic number of oxygen is 8. What is the mass number of a oxygen atom with 7 neutrons? Express your answer as an integer.
3). An atom has a mass number of 25 & 13 neutrons. What is the atomic number of this atom? Express your answer as an integer.
1). Which subatomic particles are found in the nucleus of the atom? Enter the subatomic particle or particles separated by commas.
2). The atomic number of oxygen is 8. What is the mass number of a oxygen atom with 7 neutrons? Express your answer as an integer.
3). An atom has a mass number of 25 & 13 neutrons. What is the atomic number of this atom? Express your answer as an integer.
1). Which subatomic particles are found in the nucleus of the atom? Enter the subatomic particle or particles separated by commas.
2). The atomic number of oxygen is 8. What is the mass number of a oxygen atom with 7 neutrons? Express your answer as an integer.
3). An atom has a mass number of 25 & 13 neutrons. What is the atomic number of this atom? Express your answer as an integer.

Explanation / Answer

1) protons, neutrons

2) atomic no. = no. of protons = 8
mass no. = no. of protons + no. of neutrons = 8 + 7 = 15

3) atomic no. = no. of protons in the neucleus.
mass number = number proton + number neutrons
Therefore number protons = mass number - number neutrons
= 25 - 13
= 12

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