Answer : Option C) Atomic orbitals overlap to form molecular orbitals in which the valence electrons of the atoms travel.
Explanation : The band theory in the metallic bonding can be explained by the combination of atomic orbitals to form molecular orbitals in which the valence electrons of the different or same atoms travels to form molecular bonding.
It can be bonding or anti-bonding, depending on the availability of the electrons coming from the atoms of elements.
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Answer:</h3>
Balanced equation: 4Fe + 3O₂ → 2Fe₂O₃
Moles of oxygen gas = 9 moles
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Explanation:</h3>
To answer the question;
- We first write the balanced equation between iron metal and Oxygen
- The balanced equation is given as;
4Fe + 3O₂ → 2Fe₂O₃
- We are given 6 moles of Fe₂O₃
We are required to determine the number of moles of oxygen needed to form 6 moles of Fe₂O₃.
- From the equation, 3 moles of oxygen gas reacts to produce 2 moles of Fe₂O₃
- This means, the mole ratio of O₂ to Fe₂O₃ is 3 : 2
Therefore; Moles of O₂ = Moles of Fe₂O₃ × 3/2
Hence, moles of oxygen = 6 moles × 3/2
= 9 moles
Thus, Moles of Oxygen needed is 9 moles
Answer:
In an acidic solution i.e pH is lower than 7 has higher concentration of hydronium ions compare to the hydroxide ions.
Explanation:
Acidic solutions are those solutions which have pH value less than 7.
Alkaline solutions are those solution which has pH more than 7.
Neutral solutions are those solution which has pH value equal to 7.
The pH of the solution is defined as negative logarithm of hydronium ion concentration present in an aqueous solution .
- Higher pH value indicates that hydronium ions present in the solution are less than the hydroxide ions.
- Lower pH value indicates that hydronium ions present in the solution are more than the hydroxide ions.
So, in an acidic solution i.e pH is lower than 7 has higher concentration of hydronium ions compare to the hydroxide ions.
Answer: Benzene is less reactive than methylbenzoate and more reactive than Nitrobenzene
Explanation:
This is because the methyl group on the benzene ring is an electron donating group leading to the activation of the ring and subsequently leading to more canonical resonance structure at the intermediate stage of the reaction enhancing the faster reactivity
However for the Nitrobenzene the nitro group is an electron withdrawing group leading to a slower activation and less resonance canonical structure at the reaction intermediate leading to a slower reaction than the reaction of benzene without the nitro group