atoms are made of 3 types of subatomic particles ; protons, neutrons and electrons.
Atomic number is the number of protons. Atomic number is characteristic for the element. So atoms of the same element will have the same number of protons.
mass number is the sum of protons and neutrons
Isotopes are atoms of the same element with different mass numbers. So since they are the same element the number of protons will be the same. But different mass numbers means number of neutrons will be different
therefore the three known forms of hydrogen are called A. isotopes
each of these forms will have the same number of A. protons
but different numbers of B. neutrons in their nuclei
Answer: The answer of the first problem is isotopes. The answer of the second problem is proton. The answer of the third problem is neutron.
Explanation:
Isotopes are the species having the same atomic number but having different mass number. The example of the isotopes is the three forms of hydrogen. The three forms of hydrogen are protium, dueterium and tritium.
In isotopes, there are equal number of protons but there is different number of neutrons.
To find the number of neutron, calculate the difference of the mass number and the atomic number.
Therefore, the answer of the first problem is isotopes. The answer of the second problem is proton. The answer of the third problem is neutron.
