A hydrogen atom with one neutron is called what?

• Correct Answer: deuterium
• ionic
• covalent
• magnesium

Explanation: Hydrogen is an example of an element that has isotopes. Three isotopes of hydrogen are modeled in the Figure below . Most hydrogen atoms have just one proton and one electron and lack a neutron. These atoms are just called hydrogen. Some hydrogen atoms have one neutron as well. These atoms are the isotope named deuterium. Other hydrogen atoms have two neutrons. These atoms are the isotope named tritium. For animated versions of these hydrogen isotopes, go to this URL: http://www. s-cool. co. uk/a-level/physics/atomic-structure/revise-it/isotopes .

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