No. Generally definition of an element refer to a group of atoms that have same number of protons and share same chemical properties and called isotopes of an element. Though weight of isotopes can differ representing difference in neutron number.
No, Dalton's atomic theory did not include the idea that all atoms of all elements are the same size. Instead, he proposed that atoms of different elements have different sizes and weights.
No, Dalton did not say that all atoms are the same size. Instead, Dalton proposed that all elements are composed of indivisible particles called atoms, and that atoms of different elements have different sizes and properties.
All hydrogen atoms are the same but they are different from the atoms of other elements.
Elements
Elements are not mixture of all. An element entirely of atoms of the same type.
It was proposed by John Dalton in his atomic theory.
All elements are composed of atoms, which are the building blocks of matter. Each element is characterized by the number of protons in the nucleus of its atoms, determining its unique chemical properties. The periodic table organizes elements based on their atomic number, showing the variety of elements found in nature.
A substance in which all atoms are identical is called an element.
All elements are composed of atoms.All atoms of the same elementhave the same mass, and atomsof different elements have different masses.Compounds contain atoms of more than one element.In a particular compound, atoms of different elements aalways combine in the same way.
alls
No. Atoms differ in number of protons, neutrons and electrons.
An element is composed of atoms all with the same proton number(they are the same type). The only way the atoms in an element can vary is in the number of neutrons they have.