How many electrons must be gained by hydrogen to attain noble gas electron configuration? How many hydrogen atoms are present in the molecule shown? How many protons are in an ion with 10 electrons and a -1 charge? How many protons are in an ion with 54 electrons and a -1 charge?
The periodic table organizes elements according to their atomic number which states how many protons are in the nucleus. The protons plus the neutrons in an atom make up the element's atomic mass, so the atomic mass increases as one moves across and down the periodic table. The vertical colu...
How many atoms are there in the Sun? The mass of the Sun is {eq}1.99\times {{10}^{30}}\text{ kg} {/eq}, and its composition (by mass) is approximately 70% hydrogen and 30% helium. Mass Percentage: The mass percenta...
The motions of plasmas may be notoriously difficult to model, but they can be better understood by analysing what happens when protons are scattered by atoms of hydrogen. In itself, this property is characterised by the size of a particular area surrounding the atom, known as its 'cross sectio...
How does hydrogen work in a car then? From its tank, the hydrogen is passed through an anode in a fuel-cell. The anode has a catalyst – usually platinum – which forces the hydrogen to split into protons and electrons. The protons get sucked across a ‘proton exchange membrane’ (PEM...
It plays a particularly important role in acid-base chemistry with many reactions exchanging protons between soluble molecules. As the only neutral atom with an analytic solution to the Schrödinger equation, the study of the energetics and bonding of the hydrogen atom played a key role in the ...
relatively little hydrogen was being produced by such processes. For many years relatively small amounts of hydrogen had been produced by theelectrolysisof aqueous solutions ofsaltorsodium hydroxide, the electrode reaction being H2O +e−→1/2H2+ OH−. The reaction between sulfuric orhydrochloric...
Besides electron transfer, protons (H+) are transferred from the anode to the cathode to keep the reaction going. The electrolyte has to separate the reactants at the anode and cathode and insulate electrons and conduct protons at the same time. For a working PEM fuel cell, internal ...
How strong is metallic hydrogen? Which atom has the smallest number of neutrons? How many protons are in an atom of hassium? What is the atomic number of a neutron? What is the Rutherford model of the atom? Which atom has the largest number of neutrons?
How many hydrogen atoms are present in each water molecule? How many atoms are there in 21.4 mol Hg? What is the formula for ammonium iodide? How many carbon atoms are in diamond? How many protons does a nitrogen atom have? How many of the following molecules have all of their atoms in...