electrons have negligible mass. the mass of the ion depends on how many protons and neutrons are present.
The mass number of an ion is calculated by adding the number of protons and neutrons. Since the ion has 107 electrons and a charge of +1, it must have 108 protons (107 electrons + 1). Therefore, the mass number is 108 protons + 158 neutrons, which equals 266. Thus, the mass number of the ion is 266.
The ion with an atomic number of 16, mass 33 and 18 electrons is the sulfide ion S2-
38 amu EDIT: This answer is INCORRECT. Electrons do not have significant mass.
Mass number is the sum of the number of protons (atomic number) and neutrons in the nuclei of the atoms of an isotope of a particular element. The information given can be used to find the number of protons, which is 106. You can know this because in a neutral atom, the numbers of protons and electrons are the same. So you take away the single extra electron in the ion, and you get 106 electrons in the now neutral atom. So if there are 106 electrons, there are also 106 protons. However, you still cannot determine the mass number because the number of neutrons has not been given.
# of protons:107 # of electrons:107 # of neutron:155
266
If the ion has a +1 charge and has 107 electrons, that means that it originally had 108 electrons, and therefore has 108 protons. The mass number is the sum of the protons and neutrons, 108 + 159, and therefore is equal to 267.
The ion with an atomic number of 16, mass 33 and 18 electrons is the sulfide ion S2-
Imperceptably less than one with its full compliment. Electrons are very important particles, but they have almost no mass of their own.
The sulfide ion, S2-.
38 amu EDIT: This answer is INCORRECT. Electrons do not have significant mass.
The mass number of an ion remains the same as the element. This is because an ion gains or loses electrons which have minimal mass.
A small difference of mass exist because the gain or loss of electrons.
The atomic number of Bohrium (Bh) is 107. So it has 107 protons and 107 electrons.
Mass number is the sum of the number of protons (atomic number) and neutrons in the nuclei of the atoms of an isotope of a particular element. The information given can be used to find the number of protons, which is 106. You can know this because in a neutral atom, the numbers of protons and electrons are the same. So you take away the single extra electron in the ion, and you get 106 electrons in the now neutral atom. So if there are 106 electrons, there are also 106 protons. However, you still cannot determine the mass number because the number of neutrons has not been given.
If the sodium atom is neutral (not an ion), it will have the same number of protons (11) as electrons. Therefore, a sodium atom with an atomic number of 11 will have 11 electrons when it is not an ion.
# of protons:107 # of electrons:107 # of neutron:155