Gallium (Z = 31): which compound and distinguishing property/test is characteristic of gallium?

Gallium arsenide (GaAs); notable as a semiconductor compound

Gallium(III) sulfate; gives a green flame test

Gallium hydride (GaH3); produces a stench on decomposition

Gallium nitride (GaN); forms a yellow precipitate with chloride

Germanium (Z = 32): which compound and distinguishing reagent/test is characteristic of germanium?

Germanium dioxide (GeO2); used as the common inorganic oxide of Ge

Germanium sulfide (GeS); gives a crimson flame test

Germane (GeH4); used as an inert calibration gas

Germanium nitrate; precipitates as a black salt with silver

Arsenic (Z = 33): which compound and classic qualitative test is characteristic of arsenic?

Arsenic trioxide (As2O3); detected by the Marsh test (generation of arsine)

Arsenic pentafluoride (AsF5); gives a blue flame test

Arsenic metal; identified by a green precipitate with AgNO3

Arsine oxide; forms a white precipitate with HCl

Selenium (Z = 34): which compound and distinguishing reaction/test is characteristic of selenium?

Selenium dioxide (SeO2); selenium can be identified by formation of red elemental selenium on reduction

Selenic acid (H2SeO4); gives a violet flame test

Selenium tetrachloride (SeCl4); readily forms a black mirror in the Marsh test

Selenide (Se2-); produces a green precipitate with AgNO3

Bromine (Z = 35): which compound/reagent and distinguishing chemical test is characteristic of bromine (as bromide)?

Liquid bromine (Br2); bromides give a cream precipitate with AgNO3

Bromine trifluoride (BrF3); bromides give a blue precipitate with Pb(NO3)2

Hydrogen bromide (HBr); bromides give a red solution with phenolphthalein

Bromoform (CHBr3); bromides ignite with Na

Krypton (Z = 36): which characteristic compound and distinguishing reaction is associated with krypton?

Krypton difluoride (KrF2); a rare chemically bound krypton compound formed by fluorination

Krypton oxide (KrO3); produced by ozone oxidation at room temperature

Krypton chloride (KrCl); a common ionic krypton salt precipitate

Krypton hydride (KrH); forms a stable hydride detected by silver nitrate

Rubidium (Z = 37): which compound/reagent and distinguishing chemical test is characteristic of rubidium?

Rubidium chloride (RbCl); rubidium salts give a violet (purple) flame test

Rubidium oxide (Rb2O); gives a crimson flame test

Rubidium carbonate (Rb2CO3); forms a white precipitate with AgNO3

Rubidium hydride (RbH); is detected by the Marsh test

Strontium (Z = 38): which compound/reagent and distinguishing test is characteristic of strontium?

Strontium chloride (SrCl2); strontium salts give a crimson red flame test

Strontium oxide (SrO); yields a blue precipitate with HCl

Strontium fluoride (SrF2); gives a violet flame

Strontium carbonate (SrCO3); dissolves to give a metallic sheen with NH3

Yttrium (Z = 39): which compound and a commonly cited identifying property/test is characteristic of yttrium?

Yttrium oxide (Y2O3); a stable oxide used in phosphors and ceramics (Y3+ chemistry and oxide formation are characteristic)

Yttrium chloride (YCl); gives a green flame test unique to yttrium

Yttrium hydride (YH3); produces a red precipitate with silver nitrate

Yttrium sulfide (YS); detected by the Marsh test

Zirconium (Z = 40): which compound and distinguishing chemical reaction/test is characteristic of zirconium?

Zirconium dioxide (ZrO2); the common stable oxide of Zr and basis of many chemical identifications

Zirconium tetrachloride (ZrCl4); gives a purple flame test

Zirconium sulfide (ZrS2); forms a black mirror with H2S

Zirconium hydride (ZrH2); produces a cream precipitate with AgNO3

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Trivia · Knowledge

Compounds and Characteristic Chemical Tests for 31–40

Match each element (Z = 31–40) to a characteristic compound or reagent and a distinguishing chemical test or reaction associated with that element.0 takes

by @triviagang_dataUpdated 2d ago

Preview · 10 questions

01Gallium (Z = 31): which compound and distinguishing property/test is characteristic of gallium?
02Germanium (Z = 32): which compound and distinguishing reagent/test is characteristic of germanium?
03Arsenic (Z = 33): which compound and classic qualitative test is characteristic of arsenic?
04Selenium (Z = 34): which compound and distinguishing reaction/test is characteristic of selenium?
05Bromine (Z = 35): which compound/reagent and distinguishing chemical test is characteristic of bromine (as bromide)?
06Krypton (Z = 36): which characteristic compound and distinguishing reaction is associated with krypton?
07Rubidium (Z = 37): which compound/reagent and distinguishing chemical test is characteristic of rubidium?
08Strontium (Z = 38): which compound/reagent and distinguishing test is characteristic of strontium?
09Yttrium (Z = 39): which compound and a commonly cited identifying property/test is characteristic of yttrium?
10Zirconium (Z = 40): which compound and distinguishing chemical reaction/test is characteristic of zirconium?