tamya12234 tamya12234
  • 12-09-2018
  • Physics
contestada

An element has 4 protons, 5 neutrons, and 4 electrons. What is the atomic mass of the element? 4 5 8 9

Respuesta :

osprey2015
osprey2015 osprey2015
  • 13-09-2018

at mass = protons+neutrons=9

Answer Link
Vespertilio Vespertilio
  • 15-06-2019

Answer:

9

Explanation:

The atomic mass is defined as the sum of number of protons and the neutrons.

The atomic number is defined as the number of protons in the nucleus.

Here, the number of protons are 4

the number of neutrons are 5

So the sum of number of protons and neutrons = 4 + 5 = 9

Thus, the atomic mass of the element is 9.

Answer Link

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