Asked Nov 3, 2019

Given the following elements: Si, Sr, Cu, Ti, S

(a) which of those elements would have the larget atomic radius?

(b) which of those elements would have the highest ionization energy?

(c) which of those elements would have the lowest electronegativity?


Expert Answer

Step 1

Si belongs to Group 14 and period 3.

Sr belongs to Group 2 and period 5.

Cu and Ti are transition metals where Cu is in period 11 and Ti is in period 5.

S belongs to Group 16 and period 3.

Step 2

(a) Atomic radius is the distance between the atomic nucleus and outermost shell having electrons of an atom. Down the group, the atomic radius increases whereas atomic radii reduce from left to right in the periodic table.

Therefore, Sr has the largest atomic radius.

Step 3

(b) First ionization energies of the given elements are considered. The first ionization energy is the minimum energy required to remove the electron from an isolated atom which is in the gaseous state results to giv...

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