One atom of helium contains 2 protons and 2 electrons. The most abundant isotope of helium, helium-4, has 2 neutrons. The other, rare isotope of helium, helium-3, has 1 neutron. (Source: Wikipedia)
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.
There are particular isotopes that have similar number of electrons and neutrons. Some of these isotopes include hydrogen-2, helium-4, carbon-12 and nitrogen-14.
A helium atom has 2 protons, 2 neutrons, and 2 electrons.
A neutral atom of helium must possess two electrons. Each electron carries a negative charge of -1, and since helium has a charge of 0 (neutral), the number of electrons must equal the number of protons, which is 2 in the case of helium.
The normal helium atom has two protons and two neutrons in the nucleus, and two electrons in the "shell".
2. The atomic number which is 2 stands for how many protons (also electrons, in an uncharged atom) are in the element's atom.
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.
There are particular isotopes that have similar number of electrons and neutrons. Some of these isotopes include hydrogen-2, helium-4, carbon-12 and nitrogen-14.
A helium atom has 2 protons, 2 neutrons, and 2 electrons.
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.
A neutral atom of helium must possess two electrons. Each electron carries a negative charge of -1, and since helium has a charge of 0 (neutral), the number of electrons must equal the number of protons, which is 2 in the case of helium.
Helium is an element by itself with 2 protons
The normal helium atom has two protons and two neutrons in the nucleus, and two electrons in the "shell".
Helium has 2 protons, 2 neutrons, and 2 electrons. The atomic number of helium is 2, which indicates it has 2 protons and 2 electrons in a neutral atom.
Element X with 72 protons will have 72 electrons in a neutral state. The number of protons in an element is equal to the number of electrons in that element's neutral atom.
Helium has two electrons. You can tell from looking at the periodic table because; each element has the same number of electrons as protons (the number of protons is the atomic number, which increases in number as you move from left to right across the periodic table, starting with one at Hydrogen).