Which of the following is amphoteric?
A) V2O5
B) CrO
C) Al(H2O) 63+
D) Fe(H2O) 63+
Correct Answer:
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Q37: Choose the INCORRECT statement.
A)Most representative element bonding
Q38: Which of the following transition elements is
Q39: Which element has the lowest first ionization
Q40: Choose the INCORRECT statement about the electron
Q41: Write the equation for the initial treatment
Q43: Choose the INCORRECT statement about metallurgy.
A)Zone refining
Q44: An iron plate of 0.559 m2 surface
Q45: MnO4-(aq)produces what manganese-containing species when used as
Q46: Choose the INCORRECT statement.
A)Hydrometallurgy handles materials as
Q47: Choose the INCORRECT statement.
A)Titanium is valued for
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