yes they do
A substance in which all atoms are alike is an element.
When all atoms in a substance are alike, the substance is an element. Each element is composed of atoms that have the same number of protons in their nucleus.
A substance in which all atoms are identical is called an element.
Dalton believed that there was a different atom for each element that there was, and that these atoms made up the elements that were in existence. He did not say exactly how these atoms were different, just that they were different. Dalton also believed that all of the atoms for a given element were exactly alike in every way.
they all have same number of protons and electrons (in unionized form) but may have different number of neutrons.
an element
an element
No. An atom is made of a nucleus composed of neutral Neutrons and positively charged Protons, surrounded by negatively charged electrons. The numbers of protons, neutrons, and electrons in the atom varies depending on the element. Hydrogen, for example, has only one electron. Carbon has 6.
All atoms of the same element are not identical. The atoms of same element with different number of neutrons are called as isotopes. Although, the number of protons and electrons are same in every atom.
The statement that atoms of the same element are exactly alike is attributed to John Dalton, who proposed the atomic theory in the early 19th century. Dalton's theory posited that all atoms of a given element are identical in mass and properties, which laid the foundation for modern chemistry. However, it is important to note that later discoveries, such as isotopes, revealed that atoms of the same element can differ in mass due to variations in the number of neutrons.
Atoms are made up of the smallest form of matter
No, not all atoms of a given element are alike in all respects. Isotopes are atoms of the same element that have different numbers of neutrons, leading to variations in atomic mass. This means isotopes of the same element may behave slightly differently in certain chemical reactions.