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nickel
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∙ 11y ago
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What is a substance in which one or more atoms have the same number of protons or atomic number?
Element
What atom has an atomic number 2?
Helium has the atomic number 2 and is the second most abundant substance in the universe.
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 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.
Is a atomic change the same substance after it changes?
/the atomic structure defines the substance....changing the atomic configuration changes the substance to something else.....
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.
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 is a substance in which one or more atoms have the same number of protons or atomic number?
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.
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.
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 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 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 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 is the positive subatomic particle that determines the atomic number of a substance?
proton
What is the atomic number of bleach?
Bleach is not an element and therefore does not have an atomic number. It does have a formula weight, which depends on what chemical substance effects the bleaching action.
What is the valency and atomic number of ammonium bi-carbonate?
As a compound the substance has neither a valence nor an atomic number. Only elements have atomic numbers. Only atoms and ions have valences.
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)
