Metallic bonds are responsible for many properties of metals, such as conductivity. This is because the bonds can shift because valence electrons are held loosely and move freely. That is option C.
<h3>What are metallic bonds?</h3>
Metallic bonds are defined as those bonds that causes the electrostatic attraction between metal cations and delocalized electrons of another metallic substance.
The characteristics of a metallic compound with metallic bonds include the following:
- thermal and electrical conductivity,
The metallic bonds of these metallic atoms gives them conductivity features because the electrons from the outer shells of the metal atoms are delocalised , and are free to move through the whole structure.
Learn more about metals here:
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A) 3 x 10 ^ 8
b) 3 x 10 ^ 5
c) 3.2 x 10 ^ 7
d) 9.6 x 10 ^ 15 m
e) 9.6 x 10 ^ 17 cm
<u>Answer:</u> The Young's modulus for the wire is ![6.378\times 10^{10}N/m^2](https://tex.z-dn.net/?f=6.378%5Ctimes%2010%5E%7B10%7DN%2Fm%5E2)
<u>Explanation:</u>
Young's Modulus is defined as the ratio of stress acting on a substance to the amount of strain produced.
The equation representing Young's Modulus is:
![Y=\frac{F/A}{\Delta l/l}=\frac{Fl}{A\Delta l}](https://tex.z-dn.net/?f=Y%3D%5Cfrac%7BF%2FA%7D%7B%5CDelta%20l%2Fl%7D%3D%5Cfrac%7BFl%7D%7BA%5CDelta%20l%7D)
where,
Y = Young's Modulus
F = force exerted by the weight = ![m\times g](https://tex.z-dn.net/?f=m%5Ctimes%20g)
m = mass of the ball = 10 kg
g = acceleration due to gravity = ![9.81m/s^2](https://tex.z-dn.net/?f=9.81m%2Fs%5E2)
l = length of wire = 2.6 m
A = area of cross section = ![\pi r^2](https://tex.z-dn.net/?f=%5Cpi%20r%5E2)
r = radius of the wire =
(Conversion factor: 1 m = 1000 mm)
= change in length = 1.99 mm = ![1.99\times 10^{-3}m](https://tex.z-dn.net/?f=1.99%5Ctimes%2010%5E%7B-3%7Dm)
Putting values in above equation, we get:
![Y=\frac{10\times 9.81\times 2.6}{(3.14\times (8\times 10^{-4})^2)\times 1.99\times 10^{-3}}\\\\Y=6.378\times 10^{10}N/m^2](https://tex.z-dn.net/?f=Y%3D%5Cfrac%7B10%5Ctimes%209.81%5Ctimes%202.6%7D%7B%283.14%5Ctimes%20%288%5Ctimes%2010%5E%7B-4%7D%29%5E2%29%5Ctimes%201.99%5Ctimes%2010%5E%7B-3%7D%7D%5C%5C%5C%5CY%3D6.378%5Ctimes%2010%5E%7B10%7DN%2Fm%5E2)
Hence, the Young's modulus for the wire is ![6.378\times 10^{10}N/m^2](https://tex.z-dn.net/?f=6.378%5Ctimes%2010%5E%7B10%7DN%2Fm%5E2)