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Polydentate Ligands

the d orbital...

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the d orbital electrons of iron participate in bonding so it is a hard metal but the normnal oxidation state of iron is +2 . so it is still a hard metal??

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Q. Sodium has a lower IP value and hence is highly metallic in nature. But, it is so soft that it can be cut with a knife. Iron is a hard metal, though its IP value is higher than that of sodium. Justify.

Q. The correct statement about iron includes
(I) the highest oxidation state of iron is

+ 6

K_{2} F e O_{4}

(II) that the iron shows

+ 2

oxidation state with six electrons in the

3 d

orbitals
(III) the common oxidation state of iron is

+ 3

with five unpaired electrons in the

3 d

Q. The correct statement about iron includes

(I)

the highest oxidation state of iron is

+ 6

K_{2} F e O_{4}

(I I)

that the iron shows

+ 2

oxidation state with six electrons in the unfilled

3 d

(I I I)

the common oxidation state of iron is

+ 3

with five unpaired electrons in the

3 d

When Iron is alloyed with a non-metal, a hard substance called as steel is formed. The substance which is used to make it hard is ___ .

Q. Why only is a soft metal like iron and not a hard metal like steel used in an electromagnet circuit

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Polydentate Ligands

Standard XII Chemistry

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