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What is the mass and atomic number of selenium?
The mass of selenium is approximately 78.96 atomic mass units. The atomic number of selenium is 34.
What is selenium's mass number?
Selenium's mass number is 79. It is the sum of the number of protons and neutrons in the nucleus of a selenium atom.
What is selenium's mass?
78.96amu
What number is selenium?
The atomic number of selenium is 38 and its mass number is 78.96
What is the mass number of a selenium atom that has 31 neutrons?
The mass number of an atom is the sum of its protons and neutrons. Since selenium usually has 34 neutrons, an atom of selenium with 31 neutrons would have a mass number of 34 (31 neutrons + 17 protons).
What is the mass and atomic number of selenium?
The mass of selenium is approximately 78.96 atomic mass units. The atomic number of selenium is 34.
What is selenium's mass number?
Selenium's mass number is 79. It is the sum of the number of protons and neutrons in the nucleus of a selenium atom.
What is selenium's mass?
78.96amu
What number is selenium?
The atomic number of selenium is 38 and its mass number is 78.96
What is the atomic mass of selenium?
78.96
How many neutrons are in selenium-76?
A simply formula is the atomic mass of selenium (rounded to the whole number) - atomic number = neutrons. So Selenium 76 has 45 neutrons.
Which atom has the atomic mass of 79?
Selenium
What is the mass number of a selenium atom that has 31 neutrons?
The mass number of an atom is the sum of its protons and neutrons. Since selenium usually has 34 neutrons, an atom of selenium with 31 neutrons would have a mass number of 34 (31 neutrons + 17 protons).
How many protons neutrons electrons does Selenium-77 have?
Selenium-77 has 34 protons, which is the atomic number of selenium. The number of neutrons in Selenium-77 can be calculated by subtracting the atomic number from the mass number: 77 (mass number) - 34 (protons) = 43 neutrons. Since it is a neutral atom, Selenium-77 also has 34 electrons.
How do you convert 2.76 g SE to moles SE?
To convert grams of selenium (Se) to moles, divide the given mass by the molar mass of selenium. The molar mass of selenium is approximately 78.97 g/mol. ( \dfrac{2.76 : g}{78.97 : g/mol} = 0.035 : mol : Se)
The mass in grams of 1.9 mol selenium?
1.9 mol Se ( 78.96 grams/1mol Se ) = 150.024 grams
What element has an average atomic mass nearest to 79?
Selenium
