A neutral lithium atom has 1 valence electron. A neutral bromine atom has 7 valence electrons. A chemical reaction between the 2
2 answers:
Answer: Option (B) is the correct answer.
Explanation:
Atomic number of lithium is 3 and its electronic distribution is 2, 1.
Atomic number of bromine is 35 and its electronic distribution is 2, 8, 18, 7.
It is known that a neutral atom which accepts electrons acquires a negative charge and a neutral atom that loses electrons will acquire a positive charge.
So, in order to attain stability lithium will lose its 1 valence electron and bromine will accept its 1 electron.
Therefore, lithium will acquire a positive charge and bromine will acquire a negative charge.
Thus, we can conclude that electrical charges would the 2 newly formed ions take on is and
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Answer:
6.8 mole of O₂
Explanation:
Given expression:
2H₂ + O₂ → 2H₂O
Number of moles of H₂ = 13.6moles
Unknown:
Number of moles of O₂ = ?
Solution:
In the given problem, we are to find the number of moles of oxygen gas that will use up 13.6mole of hydrogen gas;
From the reaction equation;
2 mole of H₂ will completely react with 1 mole of O₂
13.6 moles of H₂ will completely be used up by mole of O₂
= 6.8 mole of O₂