#1 is Hydrogen
Yes, elements can be ordered by their atomic number. The atomic number of an element corresponds to the number of protons in an atom's nucleus, and elements are arranged in the periodic table from lowest to highest atomic number.
The element with the lowest atomic number among the transuranium elements is neptunium, with an atomic number of 93. It is the first transuranium element produced synthetically in a laboratory setting.
Oxygen I believe
Oxygen is the element having atomic number 8. It is present in group-16.
That would be the element with the highest atomic number but the lowest number of valence electrons.
Hydrogen is a non metal element. Atomic number of it is 1. It is the element with lowest atomic number.
Of elements that have no stable isotopes, technetium has the lowest atomic number, which is 43.
The lowest atomic number actinide is actinium, with the atomic number 89.
Nitrogen
The noble gases have the lowest atomic radius among all the elements. This is because they have a full outer electron shell, leading to minimal atomic size.
Hydrogen is a none metal element. atomic number of it is 1.
The element with the lowest atomic number in period 3 is sodium (Na) with an atomic number of 11.