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One proton, one electron per atom.

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What common compound has 2 hydrogen and 1 oxygen?

Water or H2O


How are hydrogen 1 and hydrogen 2 alike?

Both hydrogen-1 and hydrogen-2 are isotopes of hydrogen, with hydrogen-1 being the most common isotope and hydrogen-2 being a rare isotope known as deuterium. Both isotopes consist of one proton in their nucleus, but deuterium also has one neutron alongside the proton, making it heavier than hydrogen-1.


What is common about hydrogen-1 and deuterium-2?

Both are isotopes of hydrogen with 1 proton and 1 electron. H-1 (protium) has 0 neutron whereas H-2 (deuterium) has 1 neutron


What is the atomic number and mass number of hydrogen?

Hydrogen it the first element in the Periodic Table. So it has Atomic No. of '1'. For its most common isotope it has an atomic mass of '1'. Hydrogen exists as three isotopes'- #1 ; protium ; Atomic mass '1' ; 1 proton, 0 neutrons, 1 electron #2 ; deuterium ; Atomic mass '2' ; 1 proton, 1 neutron, 1 electron. #3 ' tritium; Atomic Mass '3'; 1 proton, 2 neutrons, 1 electron. protium is the most common isotopes of hydrogen mass of '1' ( 1 + 0 = 1) deuterium is less common and is known as 'heavy hydrogen' mass '2' (1+1=2) tritium is rare and is radio-active, and known as 'super heavy hydrogen' (1 + 2 =3) mass '3'.


How do the isotopes hydrogen-1 and hydrogen-2 differ?

Hydrogen-1 has 1 proton and no neutrons, while hydrogen-2, also known as deuterium, has 1 proton and 1 neutron. This difference in neutron count gives hydrogen-2 a slightly higher atomic mass compared to hydrogen-1.


How many particles in a hydrogen atom?

The most common isotope of hydrogen has one proton, and one electron.The most common isotope of hydrogen has one proton, and one electron.The most common isotope of hydrogen has one proton, and one electron.The most common isotope of hydrogen has one proton, and one electron.


What are the 2 most common elements and compounds?

the most common element is hydrogen and its molecule of two hydrogen atoms is the most common molecule


2 1 H is a n of hydrogen?

2:1 is the ratio of hydrogen atoms in a molecule.


What is the most common oxidation number for hydrogen?

+1 is most common


Using the periodic table entry below how many neutrons does the most common isotope of hydrogen have?

It depends on which element are u looking upon..if its hydrogen then it has three isotopes which have a different number of neutrons..this variation in the number of neutrons in the atoms of same element invented the concept of isotope.


What is the second isotope of hydrogen?

The second isotope of hydrogen is deuterium, also known as hydrogen-2. It has one proton and one neutron in its nucleus, unlike the common isotope of hydrogen, which has no neutrons.


Are hydrogen 1 and hydrogen 2 isotopes?

Yes, hydrogen-1 and hydrogen-2 are isotopes of hydrogen. They have the same number of protons but different numbers of neutrons, with hydrogen-1 (protium) having no neutrons and hydrogen-2 (deuterium) having one neutron.