| ω , % | ( ) |
| Cr | 3,5*102 | FeCr2O4 (); PbCrO4 (); (Mg,Fe)Cr2O4 (); Fe(Cr,Al)2O4 () |
| Mo | 1,1*104 | MoS2 (); CaMoO4 (); nFe2O3 kH2O () |
| W | 1*104 | CaWO4 (); (Fe,Mn)WO4 () |
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| r | Mo | W | |
| (% ) | 50(4,31) 52(83,76) 53(9,55) 54(2,38) | 92(15,86) 94(9,12) 95(15,7) 96(16,5) 97(9,45) 98(23,75) 100(9,62) | 180(0,135) 182(26,4) 183(14,4) 184(30,6) 186(28,4) |
| , | 6,65 | 7,10 | 7,98 |
| , | 0,98 | 1,18 | 1,23 |
| 1,56 | 1,30 | 1,40 | |
| +2; +3; +6 | +2; +3; +4; +5; +6 | +2; +3; +4; +5; +6 |
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| r | Mo | W | |
| ( ) | ( ᒺ) | ||
| - | - | ||
| , ρ, /3 (293 ) | 7,19 | 10,22 | 19,32 |
| , 0 | |||
| , 0 |
ղ̲Ͳ Ҳ Ҳ V-B
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ֲ
| , | ||
| , t | ||
| H2 | ||
| Hal, t | Cr → CrHal2; CrHal3 Mo, W → EHal2; EHal3; EHal4; EHal5; EHal6; | |
| O2, t | Cr → Cr2O3; Mo, W → EO3 | |
| S, t | ExSy | |
| N2, 800-9000 | E2N; EN | |
| P, t | ExPy | |
| C, t ~ 1500 0C | ExCy |
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ֲ ²
| , | ||
| E | H2O t ~ 900 0C | Cr → Cr2O3; Mo, W → EO2 |
| H2SO4() | Cr → ; Mo, W → H2(EO4)2 | |
| H2SO4() | Cr → CrSO4 | |
| HF | Cr → CrF2 | |
| HF + HNO3 | H2[EF8] | |
| HNO3() | ||
| HNO3() | ||
| HCl | Cr → CrCl2 | |
| 3HCl + HNO3 | Mo → H2MoO4 | |
| NaOH + NaNO3 () | Na2EO4 |
80
ò ֲ IJ Ҳ V-B
|
| |
| Cr | 1) , , , . 2) , , . 3) . 4) Cr6+ ; ( ), . |
| Mo | 1) , , , . 2) ̳ , , - . |
| W | . |
|
|
|
VI-
81
