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3 years ago

11

Write ground-state electron configurations for these ions, which play important roles in biochemical processes in our bodies. (U

se a noble gas core abbreviation.)

1 answer:

Stella [2.4K]3 years ago

5 0

1s s2 s4 s5 s6

Hope that helped

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3 years ago

What type of bond is formed between the oxygen atom of one water molecule and the hydrogen atom of another water molecule?

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4 years ago

The second-order diffraction for a gold crystal is at an angle of 22.20o for X-rays of 154 pm. What is the spacing between the c

Alenkinab [10]

<u>Answer:</u> The spacing between the crystal planes is $4.07\times 10^{-10}m$

<u>Explanation:</u>

To calculate the spacing between the crystal planes, we use the equation given by Bragg, which is:

$n\lambda =2d\sin \theta$

where,

n = order of diffraction = 2

$\lambda$ = wavelength of the light = $154pm=1.54\times 10^{-10}m$ (Conversion factor: $1m=10^{12}pm$ )

d = spacing between the crystal planes = ?

$\theta$ = angle of diffraction = 22.20°

Putting values in above equation, we get:

$2\times 1.54\times 10^{-10}=2d\sin (22.20)\\\\d=\frac{2\times 1.54\times 10^{-10}}{2\times \sin (22.20)}\\\\d=4.07\times 10^{-10}m$

Hence, the spacing between the crystal planes is $4.07\times 10^{-10}m$

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3 years ago

Which type of energy is associated with random motion of atoms and molecules in a sample of air?

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3 years ago

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Help me please will give points

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