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Vinil7 [7]
3 years ago
13

Electron dot diagram for four elements are shown. Which element would be found in Group 13?

Chemistry
2 answers:
gladu [14]3 years ago
8 0

Answer:

D. 1

Explanation:

Just took it :)

ANTONII [103]3 years ago
6 0

Answer:

D: 1

Explanation:

A PEX

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The bonds of oxygen molecules are broken by sunlight. The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol
olga_2 [115]

Answer:

The wavelength of sunlight is required to break the bond in one oxygen molecule is 242 nm.

Explanation:

Energy required to break the 1 mol oxygen-oxygen bond:

=495 kJ=495000J

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Energy required to break 1 molecule of oxygen molecule= E

= E=\frac{495000 J}{6.022\times 10^{23}}=8.219\times 10^{-19} J

The energy required to break the  1 molecule of oxygen is equal to enrgy of one photon of a sunlight.

E=\frac{h\times c}{\lambda}

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c = speed of light = 3\times 10^8m/s

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The wavelength of sunlight is required to break the bond in one oxygen molecule is 242 nm.

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