F Block elements Questions and Answers

Which of these sentences is correct?
Some researches suggests that chimps can understand 300 different signs.
Some research suggests that chimps can understand 300 different signs.
Some research suggest that chimps can understand 300 different signs.
Inorganic Chemistry
F Block elements
Which of these sentences is correct? Some researches suggests that chimps can understand 300 different signs. Some research suggests that chimps can understand 300 different signs. Some research suggest that chimps can understand 300 different signs.
Iron oxide ores, commonly a mixture of FeO and Fe2O3, are given the general formula Fe3O4. They yield elemental iron when heated to a very high temperature with either carbon monoxide or elemental hydrogen. Balance the following equations for these processes:
Fe3O4(s) + H₂(g) → Fe(s) + H₂O(g)
Fe3O4(s) + CO(g) → Fe(s) + CO2(g)
Inorganic Chemistry
F Block elements
Iron oxide ores, commonly a mixture of FeO and Fe2O3, are given the general formula Fe3O4. They yield elemental iron when heated to a very high temperature with either carbon monoxide or elemental hydrogen. Balance the following equations for these processes: Fe3O4(s) + H₂(g) → Fe(s) + H₂O(g) Fe3O4(s) + CO(g) → Fe(s) + CO2(g)
Choose the correct electron configuration for abbreviated form [Ar] 4s²3d¹04p¹
A. 1s²2s²2p 3s²3p64s²4d¹04p¹
B. 1s²2s²2p63s²3p64s²4d¹¹
C. 1s²2s²2p63s²3p64s²4p65s²5p³
D. 1s²2s²2p63s²3p64s²3d¹04p¹
E. 1s²2s²2p63s²3p64s²3d¹03p¹
Inorganic Chemistry
F Block elements
Choose the correct electron configuration for abbreviated form [Ar] 4s²3d¹04p¹ A. 1s²2s²2p 3s²3p64s²4d¹04p¹ B. 1s²2s²2p63s²3p64s²4d¹¹ C. 1s²2s²2p63s²3p64s²4p65s²5p³ D. 1s²2s²2p63s²3p64s²3d¹04p¹ E. 1s²2s²2p63s²3p64s²3d¹03p¹
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