An atom of fluorine
Berylium
Radium (Ra) Z = 88.
The electronegativityÊ of alkaline earth metals decreases as you go down the group due to increase in atomic radius. The earth alkaline metals are beryllium, magnesium, strontium, barium and radium. Radium has the smallest electronegative.
7th period because atomic size down the group increases. And Alkali Earth metals are found only in Group 1. The element is in Group 1 and period 7
The Be2+ cation is smaller in size (being above the rest of the group 2 elements) and hence has high charge density. This enables it to easily polarise the comparatively larger Cl- anion, which results in a covalent characteristic of the compound. Dative bonding (a special type of covalent bond in which the shared electrons come from one of the atoms only) occurs in the compound and BeCl2 usually occurs as a dimer i.e Be2Cl4 (polymeric type) based on the linear molecular structure of BeCl2. Polarisation occurs between a small cation with high charge density and a larger anion. Since the size of the cations of the group 2 elements increases down the group (more atomic radius), charge density around the cation decreases and hence their ability to polarise the Cl- also decreases, resulting in an ionic compound.
What essentially happens is two nuclei of two different (or the same) elements are smashed together; sometimes (although rarely) parts of the nuclei will stick together instead of getting obliterated or shot out. It is through this process that particle accelerators are used to create elements; however, it is worth noting that these elements are unstable due to the nucleus's atomic radius being to large; it will be greater than the range of the residual strong force.
Iodine has 53 electrons in its orbitals while fluorine only has nine. This does not even count the proton/neutron variance.
Radium has a much larger atomic radius than beryllium.
Potassium has the largest atomic radius. It is in the 1st group of the periodic table. Fluorine has the least atomic radius.
Generally, any element with a lower atomic number.
The empirically atomic radius of beryllium (105 pm) is higher than the empirically atomic radius ofoxygen (60 pm).
bromine
In terms of atomic radius yes, nitrogen is larger than fluorine. However, the common fluorine isotopes have a greater mass than those of nitrogen.
Generally, any element with a lower atomic number.
Fluorine
The alkali earth metal with the smallest atomic radius would be beryllium(Be), number four
In the group 2 (IUPAC name) of the periodic table the atomic radius increase from beryllium to radium.
Flourine