Question

4. Using only periodic trends (not exact values), arrange the following atoms in order of increasing atomic radius: P, As, S, 5. Consider S, CI, and K and their most common ions. a. List the atoms in order of increasing size, using only periodic trends (not exact values). b. List the ions in order of increasing size, using only periodic and ionic trends, not exact values. 6. Select one neutral atom and one ion for each of the following that would be considered isoelectronic. a. Mg2+ b. 32- c. Cr3+ 7. Based on their positions on the periodic table (not exact values), list the following atoms in terms of decreasing ionization energy: CI, As, Ne, Ba.

Answer 1

4) As we know, atomic radius decreases from left to right and increases top to bottom.

Increasing order of atomic radius,

F,<S<P<As

5) a) increasing order of size

Cl < S< K

b)Their common ions are S^{​​​​​​2-}​​​​ , Cl^​- , K⁺

They all are isoelectronic,

Order of radius

K⁺ < Cl^{​​​​​-} , S^{​​​​​​2-}

6)

Mght & Ne, F so - AY * crt sc, pat decreasing order Nes cis Ass Bal