jailynleffel8
21.04.2020 •
Chemistry
Which part of the Sun's electromagnetic spectrum has the longest wavelength?
1radio wave radiation
2infrared radiation
3visible light radiation
4X-ray radiation
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Ответ:
The atomic mass of manganese atom : 55
Further explanationGiven
Manganese (Mn) atom has 30 neutrons
atomic number 25
Required
the atomic mass
Solution
The atomic mass=number of protons+number of neutrons
The atomic number = number of protons=number of electrons
The number of protons=25, so the atomic mass :