You should understand that while neutral atoms have the same number of protons and electrons, they do not usually have the same number of protons and valance electrons, because except for hydrogen and helium, atoms also have electrons in the inner shells, which are not valance electrons. Therefore, there is no atom which has 7 protons and 7 valance electrons, although there is an element that has 7 protons, and there are several elements that have 7 valence electrons.
Beryllium (Be) has 4 protons and 2 valence electrons.
Beryllium (Be) has 4 protons and 2 valence electrons.
Neon has 0 valence electrons and so there cannot be any element with fewer valence electrons.
Chlorine.
Chlorine
Beryllium (Be) has 4 protons and 2 valence electrons.
Neon has 0 valence electrons so it is not possible to have an element with fewer valence electrons. There can, therefore, be no such element.
there is no such element
Neon has 0 valence electrons so it is not possible to have an element with fewer valence electrons. There can, therefore, be no such element.
Beryllium (Be) has 4 protons and 2 valence electrons.
Rarely. The number of valence electrons of an element depends on it's position on the periodic table. Any given element can have between 1-8 valence electrons. The number of valence electrons increases left to right on the periodic table, while the number of protons, which determine the atomic mass and identity of an element, increase in general. Therefore the number of valence electrons can only equal the number of protons at the 8th element and below (neon).
Neon has 0 valence electrons and so there cannot be any element with fewer valence electrons.
This element is chlorine and is very reactive.
Correct me if I'm wrong, but I'm pretty sure it's Nitrogen.
Magnesium
Chlorine.
You should understand that while neutral atoms have the same number of protons and electrons, they do not usually have the same number of protons and valance electrons, because except for hydrogen and helium, atoms also have electrons in the inner shells, which are not valance electrons. Therefore, there is no atom which has 7 protons and 7 valance electrons, although there is an element that has 7 protons, and there are several elements that have 7 valence electrons.