what is the biggest ion?
140463
Cs (cesium) has  an atomic radius of 2.67 angstroms
30250
A major research institution has recently announced the discovery of the heaviest element yet known to science. This new element has been tentatively named "Administratium." Administratium has 1 neutron, 12 assistant neutrons, 75 deputy neutrons, and 111 assistant deputy neutrons, giving it an atomic mass of 312.
1054743
A major research institution has recently announced the discovery of the heaviest element yet known to science. This new element has been tentatively named "Administratium." Administratium has 1 neutron, 12 assistant neutrons, 75 deputy neutrons, and 111 assistant deputy neutrons, giving it an atomic mass of 312.\n\nLightest would be Hydrogen.\n\nelements consist of atoms which have protons, neutrons and electrons.
540040
mercury is the heaviest medal/ water is hydrogen and oxygen
455313
Probably the number of protons in the universe. (it's an estimate) It's a figure that is 102 digits long and all different digits.   Not just 1 with 100 zeros after it.  The biggest number known is a googleplex. A google is 1 with 100 0's after it and a googleplex is 1 with a google amount of 0's after it... it's huge.  Curiously there are only just enough protons in the universe to write it down, and that's using one proton per number...
811592
MgBr2, SrBr2, CsBr\n\nYou can determine whether one has a greater ionic character than the other by looking at the electronegativity difference. The higher that is, the more ionic it is. In general, electronegativity is highest in the top right corner of the periodic table (excluding noble gases), and lowest in the bottom left. \n\nSo, to find the one with the highest ionic character, just choose the element that is farthest away from Br, on the table.
495461
Atomic radius (or size) increases as you go down and to the left on the periodic table.  Therefore, out of these, the largest would be K.
389505
What you are asking is what is the highest number (short of infinity) that has a name?\n\nThe answer to that is a googolplex, which is 1 followed by a googol of zeros (a googol is 10^100\n\nBut in terms of the names that end in -illlion (the system developed by the French mathematician Nicholas Chuquet, 1445-1488, in the late 15th Century) the biggest I know is vigintillion, which is is 10^120 on the English (long) scale and 10^63 on the American (short) scale.\n\nVigintillion embodies the French word vingt for twenty reflecting the fact that a Frenchman devised the system.\n\nBRITISH SCALE\n\n1 million = 10^6\n1 billion = 10^12\n1 trillion = 10^18\n1 quadrillion = 10^24\n1 quintillion = 10^30\n1 sextillion = 10^36\n1 septillion = 10^42\n1 octillion = 10^48\n1 nonillion = 10^54\n\nCarrying on further, we have \n\ndecillion\nundecillion\nduodecillion \ntredecillion\nquattuordecillion \nquindecillion\nsexdecillion \nseptendecillion\noctodecillion \nnovemdecillion\nvigintillion
281135
There is a lot of answer, Here the smallest and the biggest\n\n335 180 136^2 = 112 345 723 568 978 496\n\n999 390 432^2 = 998 781 235 573 146 624
387822
Barium is a group II metal, therfore the most stable ion is Ba2+
385679
Osmium is the densest matter here on planet earth if I recall correctly from chemistry.  Black holes, white dwarves, neutron stars, the big bang singularity... Are all working theories at this point.  Since we can't simulate them in a lab and can't travel to them to sample them, we are stuck with mathematical testing.  So if you want something that you could pick up (you might need a protective suit), then it is osmium.  Otherwise the highest density occurred about 15 billion years ago at the start of the big bang.
699085
B. electron\n\nis the right answer.
643518
iono but i wanna know
185955
Go here for all the primes: http://primes.utm.edu/largest.html
833200
for cations the radii become smaller\nfor anions the radii become larger
207954
By biggest do you mean longest? I don't just look for the person who wrote the most, just the one who answered the question most thoroughly. I like when answers are more than just a few words, but it also annoys me when they're are 1500 words. Even so, I try to read all answers completely. Thanks for answering my questions! :o)
720666
The heaviest man made element is 112 protons but is unnamed.  #111 is name Roentgenium.