d block Flashcards by prakhar samaiya

Q

kmno4 in presence of acidic medium+s2o3 2-

A

s406 2-

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Q

kmno4 in presence of alkalimedium or weak basic medium with s2o3-2

A

so4-2

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Q

purple colour

A

kmno4

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Q

brown colour

A

mno2

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Q

colourless

A

mn+2 mnso4

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Q

k2cr207

A

potassium di chromate

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Q

feocr2o3

A

chromoite ore

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Q

na2cro4

A

yellow

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Q

k2cr2o7

A

orange red crystal

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Q

cro4-2 in acidic medium

A

dimer cr2O7-2

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Q

cr207 in basic medium

A

cro4-2

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Q

heating effect k2cr207(+6)

A

k2cro4(+6) and cr203(+3)

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Q

cr+3 in as

A

Cr2(so4)3 green

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Q

so3-2 in acidified k2cr207

A

so4-2

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Q

chromil chioride test

A

nacl+k2cr2o7+h2so4

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Q

chromil chlorid test

A

cro2cl2 red ornge vapour

Q

k2cr207 in h202

A

blue deep cr05

Q

stability order cr+2 Cr+3

A

cr+2

Q

Ce pr ND tb Dy common oxidation state

A

+4

Q

SM eu yb tm common oxidation state

A

+3

Q

lanthanide with acid

A

h2 gas

Q

lanthanide with carbon heigh temp

A

ln c2 ln2c3 ln3c

Q

cu+2 stability cu+3

A

cu+2