Nitrogen
Beryllium has the lowest atomic mass in group 2 of the periodic table.
The element in the periodic table that has 4 electrons in its outer energy shell and the lowest atomic mass in its family is carbon (C). Carbon belongs to Group 14 of the periodic table, which is also known as the carbon family. With an atomic number of 6, it has the lowest atomic mass among its group, which includes elements like silicon and germanium.
This is a consequence of the law of periodicity of chemical elements.
The smallest element among lithium (Li), carbon (C), and fluorine (F) is lithium. It has the lowest atomic number of the three, which is 3, while carbon has an atomic number of 6 and fluorine has an atomic number of 9. Consequently, lithium has fewer protons and electrons compared to carbon and fluorine, making it the smallest element in this group.
The atomic number increases as you go down a group on the periodic table. This is because each element in a group has one more electron and proton than the element above it, leading to an increase in atomic number.
Berylium is a non metal element. Atomic number of it is 4.
Oxygen is the element having atomic number 8. It is present in group-16.
Lithium is the element with the lowest atomic number in Group 1 (alkali metals), while hydrogen is the element with the lowest atomic number in Group 17 (halogens) and Group 18 (noble gases).
Oxygen I believe
Vinidium (V) atomic number 23 is the lowest electropositive element in this group.
Beryllium has the lowest atomic mass in group 2 of the periodic table.
The second element in group 1 is beryllium, with an atomic number of 4.
The element in the periodic table that has 4 electrons in its outer energy shell and the lowest atomic mass in its family is carbon (C). Carbon belongs to Group 14 of the periodic table, which is also known as the carbon family. With an atomic number of 6, it has the lowest atomic mass among its group, which includes elements like silicon and germanium.
This is a consequence of the law of periodicity of chemical elements.
The element with an atomic number lower than aluminum and in group 15 is phosphorus. It has an atomic number of 15, which is lower than aluminum's atomic number of 13.
Oxygen has atomic number 8. It is placed in group-16.
The element with an atomic number of 16 is sulfur. Sulfur has a valency of -2 as it is in group VI.