Question

Elements A, B, C, D, and E belong to the same period of the periodic table and have atomic radii 0.64 Å, 1.06 Å, 0.88 Å, 0.66 Å, and 1.52 Å respectively.
Arrange the atoms in increasing order of their atomic numbers.
From the data, explain how the atomic size of the elements varies from left to right in a period.
Among all, which two elements are more reactive.
Among all, which element is least reactive.
What changes occur in atomic radii and nuclear charge when we move across a period and downward to the group.​

Answer 1

Answer:

12

Explanation: