Give two points of difference between Atomic Number -Mass Number
Answers
Answer:
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Answer:
The outer shell is known as the valence shell, and is where the reacting electrons reside - those that form bonds with other atoms. ... The atomic number is the total number of protons in the nucleus, which is equivalent to the total number of electrons - not just those in the valence shell.
Elements and Atomic Number
Elements and Atomic NumberMercury is an element with 80 protons in its nucleus. It has an atomic number of 80. Copper is made of atoms with 29 protons in the nucleus. Therefore, it has an atomic number of 29.
Explanation:
The atomic number is equal to the number of protons in an atom's nucleus. The atomic number determines which element an atom is. For example, any atom that contains exactly 47 protons in its nucleus is an atom of silver.
Mass number: It is the sum of the number of neutrons and the number of protons. For example, the atomic number of Lithium is 4 which is equal to the number of protons, the number of neutrons of magnesium is 4. The mass number is equal to 8(4+4).
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