13. Circle the element, ion or molecule which has the: K or Ca a. smaller atomic

Question

13. Circle the element, ion or molecule which has the: K or Ca a. smaller atomic radius or As b. larger atomic radius Na+ orF larger ionic radius d. larger ionization potential e. larger electron affinity t. larger electronegativity s. larger electropositivity h. greater metallic charaoter i. greater density j. greater oxidizing power k. greater reducing pover B or o Br or C N or 0 Te or Sb si or A1 C12 or 12 Sr or S H or Fr 14. Based on the most likely oxidation states previously dis- cussed, write the most likely formula for binary compound made f rom: a. sodium and oxygen b. calcium and chlorine c. aluminum and sulfur d. potassium and phosphorus 15. Write a balanced equation for: a. potassium, an alkali metal, with: i. oxygen ii. water b. strontium, an alkali earth metal, with: i. oxygen ii. water

Explanation / Answer

13.

a. Ca

b. As

c. F-

d. B

e. Cl

f. O

g. Sb

h. Al

i. I2

j. S

k. Fr

14.

a. Na2O

b. CaCl2

c. Al2S3

d. K3PO4

15.

a.

i. 4K + O2 --->2K2O

ii. 2K + 2H2O --->2KOH + H2

b.

i. 2Sr + O2-----> 2SrO

ii. Sr + 2H2O -------> Sr(OH)2 + H2

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