fqjenfiq6901 fqjenfiq6901

10-08-2017
Chemistry

contestada

The atomic number of this element is 9 and its mass is 20. how many neutrons does this element have?

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Willchemistry Willchemistry

16-08-2017

Hey there!

n = A - Z

n = 20 - 9

n = 11

Answer Link

faizanshaukat89 faizanshaukat89

03-02-2020

Answer:

11 neutrons

Explanation:

Mass no. = 20

atomic no. = 9

no. of neutrons = mass number - atomic number

= 20 - 9

= 11 neutrons

Answer Link

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