Subaru has the utmost respect for the environment and is a proud partner of Leave No Trace. Care was taken not to harm the environment when taking this photo. Subaru, SUBARU BOXER, BRZ, Forester, Impreza, Legacy, Outback, STI, Tribeca, WRX, XV Crosstrek and EyeSight are registered trademarks.
What is the largest atom (in terms of volume not atomic mass or weight)? 9/21/99 Vocabulary atomic radius effective nuclear charge lanthanide contraction pm valence electron valence shell Cesium (Cs), tucked in the lower left hand corner of the table, has the largest known atoms.The atomic radius of Cs is given variously as 273.1 pm [1], 265 pm [2], 265.5 pm [3] or 260 pm [4].ubidium also has large atoms, but its atomic radius is almost 30 pm less than cesium's. Why are cesium atoms so big? Cesium has a large valence shell and a relatively low effective nuclear charge. The valence shell (the outer 'peel' of the atom) is largest in atoms at the bottom of the periodic table.
the periodic table of the chemical elements is a list known atoms chemical elements in the table the elements are placed in the order of their atomic numbers starting with the lowest number the atomic number of an element is the same as the number of electrons or protons in the atomin the periodic table the elements are arranged into periods and groups a row of elements across the table is called a period each period has a number from 1 to 7period 1 has only 2 elements in it hydrogen and heliumn the periodic table the elements are arranged into periods and groups a row of elements across the table is called a period each period has a number from 1 to 7 period 1 has only 2 elements in it hydrogen and helium