active
2 protons, 2 electrons He-3 isotope has 1 neutron He-4 isotope has 2 neutrons
Helium has two protons, since its atomic number is two. It is an inert element so it also has two electrons. The number of neutrons depends entirely on the isotope. The most common and stable isotope of Helium has 2 neutrons.
The nucleus of an atom is not involved in chemical reactions. The nucleus contains protons and neutrons, which do not participate in chemical bonding or reactions. Chemical reactions involve the electrons in the outer energy levels of an atom.
An element is chemically active till it does not attain an inert gas configuration.
There is no electron exchange when no reaction takes place (this is what 'inert' means)
2 protons, 2 electrons He-3 isotope has 1 neutron He-4 isotope has 2 neutrons
Helium has two protons, since its atomic number is two. It is an inert element so it also has two electrons. The number of neutrons depends entirely on the isotope. The most common and stable isotope of Helium has 2 neutrons.
Helium has two protons, since its atomic number is two. It is an inert element so it also has two electrons. The number of neutrons depends entirely on the isotope. The most common and stable isotope of Helium has 2 neutrons.
Helium has two protons, since its atomic number is two. It is an inert element so it also has two electrons. The number of neutrons depends entirely on the isotope. The most common and stable isotope of Helium has 2 neutrons.
Both those atoms are Magnesium but the second one is Magnesium25 not Magnesium 24 (standard Magnesium). Both have 12 protons and 12 electrons. Their charges are the same and their weights are the same.
The type of a element is determined by the number of protons it carries. The element which have to protons is helium. An instance of the element with more electrons than protons, which makes it negatively charged, is called a anion or a negative ion. However, helium is one of, what are called, inert gases. The number of electrons in an inert gas is at the most stable number. It is quite hard to add or extract electrons from an inert gas. So without sounding absolute, He(-) is quite hard to come by.
Every neon atom has 10 electrons. There are 10 and 12 neutrons in the neon-20 and neon-22 isotopes respectively.
Hydrogen and helium, both gasses, differ greatly in:the number of protons and electrons (1 or 2),the number of neutrons (0 or 2),their Atomic Mass 1.0 or 4.0 ,and not at least in their reactivity (highly explosive or inert).
Beryllium (Be) has 4 protons and 2 valence electrons.
In its non-ionized state, which is usually how it is found since it's an inert gas, argon has 18 electrons.All atoms have the same number of electrons and protons. According to the periodic table, argon has 18 protons. It therefore also has 18 electrons.Number of Protons/Electrons: 18
The Bohr diagram for helium shows two electrons in the first energy level surrounding the nucleus, which has two protons and two neutrons. The electrons are positioned in a stable configuration with a full outer shell, making helium a chemically inert noble gas.
A neon-20 atom has 10 protons and 10 neutrons within its nucleus, whereas neon-22 has 10 protons and 12 neutrons, making it an isotope.