[Answered] An atom of sodium has an atomic number of 11 and a mass of 23 . How many neutrons does it have? ...

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Author Question: An atom of sodium has an atomic number of 11 and a mass of 23 . How many neutrons does it have? ... (Read 80 times)

HCHenry

Hero Member
Posts: 591

on: Jul 27, 2018

An atom of sodium has an atomic number of 11 and a mass of 23 . How many neutrons does it have?

a. 11
b. 12
c. 23
d. 34
e. 35

Question 2

Why is the ozone layer in Earth's atmosphere important to life on its surface?

What will be an ideal response?

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sierrahalpin

Sr. Member
Posts: 329

Reply #1 on: Jul 27, 2018

Answer to Question 1

b

Answer to Question 2

The ozone layer in the upper atmosphere protects the lower atmosphere and Earth's surface from harmful solar UV photons.

HCHenry

Hero Member
Posts: 591

Reply #2 on: Jul 27, 2018

Thank you!

sierrahalpin

Sr. Member
Posts: 329

Reply #3 on: Jul 27, 2018

Always glad to help...

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Author Question: An atom of sodium has an atomic number of 11 and a mass of 23 . How many neutrons does it have? ... (Read 80 times)

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