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How do you find the mass number of an atom that has 3 protons and 4 neutrons and 2 electrons?
The mass number of an atom is the sum of its protons and neutrons. In this case, the atom has 3 protons and 4 neutrons, so the mass number is 3 + 4 = 7. Electrons do not contribute to the mass number as their mass is negligible compared to protons and neutrons.
What is the number of neutrons for Li?
Subtract number of protons (=atomic number) 3 from the total number of protons AND neutrons ( p+n = mass number) 7, leaves the number of neutrons 47-3=4
What is the mass number of a helium atom that has 2 protons and 2 neutrons?
Number of neutrons = Mass number - Number of protons = 4 - 2 = 2 neutrons
What is a metal with unequal protons and neutrons?
Lithium: It has 4 neutrons and 3 protons.
If beryllium has an atomic number of 4 and an atomic mass of approximately how many neutrons does beryllium atom have?
Since the mass number is protons plus neutrons, it would have 5 neutrons.
How do you find the mass number of an atom that has 3 protons and 4 neutrons and 2 electrons?
The mass number of an atom is the sum of its protons and neutrons. In this case, the atom has 3 protons and 4 neutrons, so the mass number is 3 + 4 = 7. Electrons do not contribute to the mass number as their mass is negligible compared to protons and neutrons.
How many subatomic particles are in lithium?
6Li has 3 protons, neutrons and electrons. 7Li has 3 protons, 4 neutrons and 3 electrons.
How many protons neutrons and electrons does Li have?
The most frequent isotope of lithium has 4 neutrons.
How many protons are in a lithium nucleus?
The atomic number of lithium is 3. Therefor there are 3 protons and neutron in the nucleus of lithium. Lithium also has 4 neutrons. atomic # = protons and neutrons neutrons = rounded atomic mass - atomic number Sources- 7th grade Acc. Science
What is the total number of neutrons in an atom of 7 lithium 3?
There are 4 neutrons in a lithium-7 atom. Lithium, which has atomic number 3, has 3 protons in its nucleus. If its atomic number is 3 (which is the number of protons in its nucleus) and its mass number is 7, we can find the number of neutrons by subtracting the atomic number from the mass number. In this case, 7 minus 3 equals 4.
How many number of protons in an atom of an element?
Whatever the number of neutrons are in the nucleus is the number of protons. Ex: Neutrons- 4 Protons - 4 Electrons-3 (Which would be an example of a positively charged atom)
What is the number of neutrons for Li?
Subtract number of protons (=atomic number) 3 from the total number of protons AND neutrons ( p+n = mass number) 7, leaves the number of neutrons 47-3=4
Protons neutrons electrons for lithium?
Lithium has 3 protons, 4 neutrons, and 3 electrons.
How many protons are there in an atom the element lithium if it has an atomic number of 3?
Lithium has 3 protons. The atomic number and the number of protons will be the same.
What is the mass number if an atom has 3 protons and 4 neutrons?
seven
What is the number of an atom with 3 protons 4 neutrons and 3 electrons?
The number of protons in the nucleus is given by the atomic number. So in your example, this would be atomic number 3 (lithium). It will have atomic mass of 7 (3 protons + 4 neutrons), and a charge of 0 since there are also 3 electrons to balance the 3 protons.
What is the mass number of a helium atom that has 2 protons and 2 neutrons?
Number of neutrons = Mass number - Number of protons = 4 - 2 = 2 neutrons
