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slega [8]
3 years ago
12

20. Using the picture, how many neutrons does lithium have?

Physics
1 answer:
Igoryamba3 years ago
8 0

Answer:

No. of Neutrons = 3

Explanation:

The atomic number of Lithium is given as 3 in the symbol while the mass number is given as 5.941 which is approximately equal to 6.

Mass Number = No. of Protons + No. of Neutrons = 6

Atomic Number = Number of Electrons = No. of Protons = 3

Therefore,

Mass Number - Atomic Number = (No. of Protons + No. of Neutrons) - No. of Protons

Mass Number - Atomic Number = No. of Neutrons

No. of Neutrons = 6 - 3

<u>No. of Neutrons = 3 </u>

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3 years ago
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By looking at the ray diagram, we see that the image is located approximately at a distance of 6-7 cm from the lens. This can be confirmed by using the lens equation:

\frac{1}{q}=\frac{1}{f}-\frac{1}{p}

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B) The image is upright

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4 0
3 years ago
A liquid does not have a definite shape, but it does have a definite volume.<br><br> TRUE or FALSE
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4 0
2 years ago
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