Question

which of the following metals would be predicted to have the smallest atomic radius? answer: cesium (cs) barium (ba) lanthanum (la) europium (eu) tantalum (ta)

Explanation:

As we move from left to right across a period in the periodic table, the atomic radius generally decreases. This is because the number of protons in the nucleus increases, resulting in a greater positive charge that pulls the electrons closer. Tantalum (Ta) is further to the right in the periodic table compared to cesium (Cs), barium (Ba), lanthanum (La), and europium (Eu).

Answer:

E. tantalum (Ta)