The chemical nature of an element is determined (mainly) by the electronic configuration in the outermost shells. However, most elements have isotopes - atomic configurations that have the same outer shells, but which may have a different number of neutrons in the atom core. This gives them the same chemical nature, but a different mass. Many isotopes are unstable in the long run - they will spontaneously disintegrate.
Atoms of different elements are characterized by the number of protons they contain in their nucleus, which determines the atomic number and identity of the element. The arrangement and number of electrons in the electron cloud surrounding the nucleus also vary among elements. Additionally, different elements have unique chemical properties based on how their atoms interact with one another.
Isotopes are atoms of the same elements with different number of neutrons.
Fats are made of the same elements as carbohydrates, but in different proportions.
Elelments are determined by the amount of protons they have. While different elements can have the same number of neutrons and protons, no two different elements can have the same amount of protons.
Since you have isotopes of elements. Isotopes are elements with different number of neutrons hence why the different atomic masses for the same elements.
The number of protons is always different. Depending on isotopes, the number of neutrons and atomic mass can be the same as another element. Electrons almost always are varying in number, making elemental ions have the same number of them.
Because the proportions of the elements are different in the different compounds. They may contain the same elements, but the different proportions make them different compounds with different properties.
The chemical nature of an element is determined (mainly) by the electronic configuration in the outermost shells. However, most elements have isotopes - atomic configurations that have the same outer shells, but which may have a different number of neutrons in the atom core. This gives them the same chemical nature, but a different mass. Many isotopes are unstable in the long run - they will spontaneously disintegrate.
They have different numbers of valance electrons...
No two different elements will have the exact same atomic number. Each element has a unique number of protons in its nucleus, which determines its atomic number and distinguishes it from other elements.
No, none of two elements in any group have the same number of neutrons. But there are such elements across a period, and they are known as isotones. Some examples are; carbon-12 and nitrogen-13 oxygen-18 and fluorine-19 phosphorus-31 and sulfur-32
elements of same shape have different boiling points because their bonding may vary! the elements with covalent bonds will have high boiling point!