What element does the electrons in a atom determine?

Answer 1

An electron shell may be thought of as an orbit followed by electrons around an atom's nucleus. The closest shell to the nucleus is called the "1 shell" (also called "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on further and further from the nucleus. The shell letters K, L, M, ... are alphabetical.

Each shell can contain only a fixed number of electrons: The 1 shell can hold up to two electrons, the 2 shell can hold up to eight electrons, and in general, the n shell can hold up to 2n2 electrons. Since electrons are electrically attracted to the nucleus, an atom's electrons will generally occupy outer shells only if the more inner shells have already been completely filled by other electrons. However, this is not a strict requirement: Atoms may have two or even three outer shells that are only partly filled with electrons. (See Madelung rule for more details.) For an explanation of why electrons exist in these shells see electron configuration.[1]

Answer 2

The number of electrons in an element, jointly with the number of protons, determines the net electric charge on an atom or ion of the element.

Answer 3

In a neutral atom the number of electrons is equal to the number of protons.

Answer 4

Electrons are negatively charged. They have a negative charge of 1.602*10^-19 c. The mass of them is 9.1*10^-31 kg.

Answer 5

The number of electrons has to equal the number of protons in an element for electrical neutrality. The number of protons gives the atomic number

Answer 6

Chemical reactivity is determined by the electronic structure, specifically the valence electrons.

Answer 7

The chemical properties

Answer 8

properties