35.5(u).
The element with an atomic weight of 35.453 is chlorine (Cl).
The atomic weight of Br (Bromine) is the sum of the atomic weights of Cl (Chlorine) and I (Iodine). This is because bromine falls between chlorine and iodine in the periodic table, thus its atomic weight is approximately the average of the atomic weights of chlorine and iodine.
The atomic weight of potassium is 39,0983 g.The atomic weight of chlorine is 25,45 g.The molecular weight of potassium chloride (K + Cl) is 74,5483 g.
The atomic weight of sodium chloride is the sum of the atomic weights of sodium (Na) and chlorine (Cl), which is approximately 58.44 g/mol. Sodium has an atomic weight of 22.99 g/mol, and chlorine has an atomic weight of 35.45 g/mol.
The formula weight of BaCl2 (barium chloride) can be calculated by adding the atomic weights of barium (Ba) and two chlorine atoms (Cl). The atomic weight of barium is 137.33 g/mol, and the atomic weight of chlorine is 35.45 g/mol. Therefore, the formula weight of BaCl2 is (137.33 + 35.45 + 35.45) = 208.23 g/mol.
The atomic weight of scandium chloride (ScCl3) is calculated by adding the atomic weight of scandium (Sc) to three times the atomic weight of chlorine (Cl). The atomic weight of scandium is approximately 44.96 g/mol, and the atomic weight of chlorine is approximately 35.45 g/mol. Therefore, the atomic weight of ScCl3 is approximately 150.31 g/mol.
The atomic mass unit of chlorine (Cl) is approximately 35.45.
The atomic number of chlorine (Cl) is 17. When two chlorine atoms (Cl) combine to form Cl₂, the atomic number remains 17 because it represents the number of protons in the nucleus of each chlorine atom.
The molecular weight of NaCl is 58.44g/mol, the atomic mass of Na is 22.99 and the atomic mass of Cl is 35.45 when added together we get 58.44 g/mol.The molecular weight of BaCl2 is 208.233g/mol, the atomic mass of Ba is 137.327 and the atomic mass of Cl2 is (35.453)(2) = 70.906 when added together we get 208.233g/mol
Cl-
Among these three elements, Cl has the greatest mass, as can be seen from any periodic table or other reference work that shows atomic masses.
Atomic radius increases going down the periodic table and going from right to left, meaning that Fr (Francium) has the largest atomic radius and He (Helium) has the smallest. Therefore, Cl<S<P<Si<Al So the answer is Cl