The idea that the atoms of different elements are different was first postulated by John Dalton in his atomic theory. In his theory he stated that all of the atoms of a given element are identical in mass and properities, and that compounds form by the combination of two or more different kinds of atoms.
no. There is one element for each kind of atom.
because different element have different number of electrons.
Each element has a different number of protons and neutrons. So it changes for each element.
An atom is an element. Every atom has a certain amount of protons, neutrons and electrons and these are what define which element that atom is.
Nothing. The question is wrongly stated. Each single atom is an element.
no. There is one element for each kind of atom.
An element is a class of substances An atom is the smallest possible piece of an element. An isotope is an electrically charged atom.
There are 9 protons in the element fluorine.
no Yes, the number of protons and electrons is different for each chemical element and the number of neutrons is different for each isotope.
It is different for each element. In hydrogen, there is one.
because different element have different number of electrons.
The mass number would be different for different isotopes of the same element.
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
Each element has a different number of protons and neutrons. So it changes for each element.
It is the same for each and every element, it's the number of protons in the nucleus of one atom of the element.
The atoms of each element have a number of protons that is unique to each element. The number of protons makes one atom different from another.
Each element has a unique number of protons. If another atom has the same number of protons as that element, it is the same element.