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What atom has an atomic number 2?
Helium has the atomic number 2 and is the second most abundant substance in the universe.
What is a substance in which one or more atoms have the same number of protons or atomic number?
Element
If there is a difference between a substance's atomic number and its atomic mass and which measure must be the larger number?
The atomic number represents the number of protons in an atom, while the atomic mass represents the sum of protons and neutrons. Generally, the atomic mass is larger than the atomic number for most elements since it includes both protons and neutrons.
Is an element a pure substance made up of two kinds of atoms?
No, an element is a pure substance having a specified atomic number. The atomic number is the number of protons in the nucleus of the atom. There may be isotopes of an element having different numbers of neutrons in the nucleus.
Is a atomic change the same substance after it changes?
Yes, an atomic change involves rearranging the atoms of a substance to form a new substance. The new substance may have different properties than the original substance due to the change in atomic structure.
What is a pure substance - all the atoms have the same atomic number or number of protons?
A pure substance in which all the atoms have the same atomic number or number of protons is an element.
What atom has an atomic number 2?
Helium has the atomic number 2 and is the second most abundant substance in the universe.
What is a substance where all atoms have the same atomic number?
An element.
What is a substance in which one or more atoms have the same number of protons or atomic number?
Element
If there is a difference between a substance atomic number and its atomic mass which measure must be the larger number?
The atomic mass number must be higher as that represent the number of protons and neutrons in an element. Whereas only the number of protons are represented in the Atomic Number.
What element has atomic number of 2?
Helium has the atomic number of 2. It is in the group noble gases. It is classified as a non-metallic substance.
What atom has an atomic number of 2?
Helium has the atomic number of 2. It is in the group noble gases. It is classified as a non-metallic substance.
What is the positive subatomic particle that determines the atomic number of a substance?
proton
What determines the atomic number of a substance?
The atomic number is the number of protons in the nucleus of an atom, while the atomic mass is the total mass of the nucleus (both protons and neutrons)
A substance in which one or more atoms have the same number of atomic number?
No two elements have the same number of protons.
A unique substance composed of atoms having the same atomic number?
it protons is the answer.
What is a unique substance composed of atoms have the same atomic number?
An element is a unique substance composed of atoms with the same atomic number, meaning they have the same number of protons in their nucleus. Each element is distinguished by its atomic number, which determines its position on the periodic table and its chemical properties.
