I need help ASAP!! I tried every answer but it’s saying there all wrong !

Chemistry

1 answer:

Travka [436]3 years ago

6 0

Mechanical Energy and Thermal Energy

Hope this helps!! :)

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c. should be it

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Assuming the metals lose all their valence electrons and the nonmetals gain electrons to complete the s-p subshells, which listi

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Answer: Option (c) is the correct answer.

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Atomic number of sodium is 11 and its electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{1}$ . When sodium loses one electron then it will attain +1 charge and its electronic configuration will be as follows.

$Na^{+}$ : $1s^{2}2s^{2}2p^{6}$

Atomic number of fluorine is 9 and its electronic configuration is $1s^{2}2s^{2}2p^{5}$ . When fluorine gains an electron then it acquires -1 charge and its electronic configuration is as follows.

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5) When heated in a flame, the element Indium emits electromagnetic radiation with a distinctive indigo blue

grandymaker [24]

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$\lambda=451nm$

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to solve this problem by using the following equation, defined in terms of energy, Planck's constant, wavelength and speed of light:

$E=\frac{hC}{\lambda }$