Is it Possible for two or More Elements to Have the Same Number of Proton? Why?
Answer:
YES, because the number of protons in an atom is called its atomic number (Z). This number is very important because it is unique for atoms of a given element. All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms.
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral. Chemically, we say that the atoms have formed bonds.
What is the Mass Number of an Atom of Helium That Contains 2 Neutrons?
Solution
Number of protons)=2(Remember that an atom of helium always has 2protons).
(Number of neutrons)=2
Mass number=(number of protons)+(number of neutrons)
Mass number=2+2=4
Summary of Elements for Protons
Elements are pure substances that make up all matter, so each one is given a unique name.
The names of elements are also represented by unique one- or two-letter symbols.
Each element has a unique number of protons. An element's atomic number is equal to the number of protons in the nuclei of any of its atoms.
The mass number of an atom is the sum of the protons and neutrons in the atom.
Isotopes are atoms of the same element (same number of protons) that have different numbers of neutrons in their atomic nuclei.
Answers & Comments
Is it Possible for two or More Elements to Have the Same Number of Proton? Why?
Answer:
YES, because the number of protons in an atom is called its atomic number (Z). This number is very important because it is unique for atoms of a given element. All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms.
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral. Chemically, we say that the atoms have formed bonds.
What is the Mass Number of an Atom of Helium That Contains 2 Neutrons?
Solution
Number of protons)=2 (Remember that an atom of helium always has 2 protons).
(Number of neutrons)=2
Mass number=(number of protons)+(number of neutrons)
Mass number=2+2=4
Summary of Elements for Protons
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