Which molecular formula is written incorrectly? CO CH4 Br4Si N2
2 answers:
Answer:
is written incorrectly
Explanation:
In a molecular formula, the central atom in it's lewis structure is written first followed by other bonded atoms.
The least electronegative atom (except H) is the central atom in a lewis structure.
In , Si is the least electronegative atom as Br has higher electronegativity than Si. Therefore Si is the central atom in lewis structure of
. So molecular formula of
should be written as
.
In all other cases, the least electronegative atom have been written first.
So, is written incorrectly.
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I attached the working and the answer to the question below.
<span>Note that in the formula, C = speed of light, ν = frequency, λ= wavelength
</span><span>
The wavelength of a 4.3 x 10</span>¹⁵<span> /s wave is 6.98 </span>× 10⁻⁶.
<span>Note that in the formula, C = speed of light, ν = frequency, λ= wavelength
</span><span>
The wavelength of a 4.3 x 10</span>¹⁵<span> /s wave is 6.98 </span>× 10⁻⁶.
Answer: It is very important to know the activity tendencies of the elements. The activity tendencies tells us about whether the element is reactive or not.
In the redox-reaction where there is a need to know the oxidizing agent and reducing agent, we can know it easily from the activity tendencies. The elements lying above the reactivity series are better reducing agents.
In the substitution reactions, the activity tendencies helps us to know which element will replace the other. The element lying above in the series will replace the element lying below it.
where, N is an element that lies above in the reactivity series
M is an element that lies below in the reactivity series
This has all of the charges above the columns. Hopefully it helps!
