Among the following the correct statements areI. Germanium exists only in tracesII. PbF4 molecule is tetrahedral in shapeIII. GeX2 is more stable than GeX4

Germanium, tin and lead are those elements of group-14 that exist only in traces.Lead tetrafluoride is PbF4, which is a compound of lead and fluorine. The yellow solid (melting point 600 °C) is the only room-temperature stable tetrahalide of lead. This molecule is tetrahedral.In GeX2, the oxidation state of Ge is +2 and in GeX4, the oxidation state of Ge is +4. Since +4 state of Ge is more stable than +2 state, the statement (III) is wrong.

Among the following the correct statements areI. Germanium exists only in tracesII. PbF4 molecule is tetrahedral in shapeIII. GeX2 is more stable than GeX4

Germanium, tin and lead are those elements of group-14 that exist only in traces.Lead tetrafluoride is PbF4, which is a compound of lead and fluorine. The yellow solid (melting point 600 °C) is the only room-temperature stable tetrahalide of lead. This molecule is tetrahedral.In GeX2, the oxidation state of Ge is +2 and in GeX4, the oxidation state of Ge is +4. Since +4 state of Ge is more stable than +2 state, the statement (III) is wrong.

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Among the following the correct statements are
I. Germanium exists only in traces
II. PbF₄ molecule is tetrahedral in shape
III. GeX₂ is more stable than GeX₄

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I, III only

I, II, III

I, II only

II,III only

answer is B.

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Detailed Solution

Germanium, tin and lead are those elements of group-14 that exist only in traces.
Lead tetrafluoride is PbF₄, which is a compound of lead and fluorine. The yellow solid (melting point 600 °C) is the only room-temperature stable tetrahalide of lead. This molecule is tetrahedral.
In GeX₂, the oxidation state of Ge is +2 and in GeX_4,the oxidation state of Ge is +4. Since +4 state of Ge is more stable than +2 state, the statement (III) is wrong.

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