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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.
Chlorine.
hydrogen has fewer protons and electrons than any other element.
What makes each element unique is the number of protons in the nucleus. Sodium has 11 protons and Magnesium has 12 protons. The periodic table is arranged with the number of protons of each element increasing to the right and down the table. For an element to fit between sodium and magnesium it would have to have fewer than 12 protons but more than 11, which is simply not possible.
there is no such element
The vast majority
Chlorine.
Carbon is the element in the same family as lead with atomic number less than sodium.
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.
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.
Chlorine
Chlorine.
Sulfur. definitely Sulfur
Cl Chlorine
This would be Sb - Antimony.
Chlorine.