Selenium is an element which contains 34 protons. With these 34 protons, it also contains 45 electrons. SE (selenium's symbol) is mainly used TV cameras and photoelectric cells. The element was discovered in 1817 by Jons Berzelius.
Selenium has 46 neutrons and 34 protons. It is in the p block. It is a non metal.
Selenium (symbol Se).
Selenium
Pd (palladium) is the 46th element so has 46 protons. This means that (uncharged) it has 46 electrons. The atomic mass for Pd rounds to 106. Now atomic mass = protons + neutrons, so neutrons = atomic mass - protons. Therefore, neutrons(Pd) = 106 - 46 = 60. Meaning Pd has 60 neutrons.
The 46 = #Neutrons + #Protons and 22 = #Protons so... # Neutrons = 26
Ca-46 is an isotope of the calcium found on the periodic table. The atomic number is equivalent to how many protons the atom has and tells the identity of the element, if the number of protons is changed/ atomic mass number, the element would transmutate into another element. Thus, Ca always has 20 protons. Because it is not Ca++ or Ca- it is not changing the charge so no electrons are moving either. This means the number 46 is refering to a change in neutron in the nucleus of the atom, hence it is called an isotope. 46 is the number of protons plus neutrons so the isotope of Calcium has 20 protons, 20 electrons and 26 neutrons, or 46-20=26. Hope this clarifies things.
Atomic number of palladium is 46. So there are 46 protons and 46 electrons. Mass number is 106. Mass number = number of protons + number of neutrons. So number of neutrons = 106 - 46 = 60
The element platinum (Pt) has 78 protons in the atomic nucleus.
The atomic number of selenium is 34. so there are 34 protons. Number of neutrons = 80 - 34 = 46
Bromine-79 has 44 neutrons and bromine-81 has 46 neutrons. All the isotopes of bromine has 35 protons.
34 protons, 34 electrons and 46 neutrons
The atomic number of selenium is 34. So there are 34 protons. In Se-80, there will be 46 neutrons (80 - 34 = 46) Note: There is no isotope Selenium-30 as originally asked in the question.
Pd (palladium) is the 46th element so has 46 protons. This means that (uncharged) it has 46 electrons. The atomic mass for Pd rounds to 106. Now atomic mass = protons + neutrons, so neutrons = atomic mass - protons. Therefore, neutrons(Pd) = 106 - 46 = 60. Meaning Pd has 60 neutrons.
34 protons 34 electrons 46 neutrons
The number of protons defines an element - the number of neutrons isn't needed to find the identity of the element. All ions and isotopes with 44 protons is ruthenium. However, with the information about the neutrons, we know the specific isotope: 101Ru.
All selenium atoms have 34 protons, because that is what defines Selenium. The number that comes after an isotope name is the mass number, which is the sum of the protons and neutrons. Because we know the sum of the protons and neutrons, and the number of protons, we can easily deduce the number of neutrons.p=# of protons n=# of neutrons, and mn=mass numberp+n=mnn=mn-pn=(76)-(34)n=42
The 46 = #Neutrons + #Protons and 22 = #Protons so... # Neutrons = 26
Ca-46 is an isotope of the calcium found on the periodic table. The atomic number is equivalent to how many protons the atom has and tells the identity of the element, if the number of protons is changed/ atomic mass number, the element would transmutate into another element. Thus, Ca always has 20 protons. Because it is not Ca++ or Ca- it is not changing the charge so no electrons are moving either. This means the number 46 is refering to a change in neutron in the nucleus of the atom, hence it is called an isotope. 46 is the number of protons plus neutrons so the isotope of Calcium has 20 protons, 20 electrons and 26 neutrons, or 46-20=26. Hope this clarifies things.
Strontium has several natural isotopes, and many artificial ones. Taking Sr84 as the one to study, it has 38 protons, 38 electrons, and 46 Neutrons.
Atomic number of palladium is 46. So there are 46 protons and 46 electrons. Mass number is 106. Mass number = number of protons + number of neutrons. So number of neutrons = 106 - 46 = 60