The difference is Lithium has more protons, neutrons and electrons than helium.
What is lithium?
Lithium is a soft, silvery-white alkali metal with atomic no.3 and symbol Li.
What is helium?
Helium is a chemical element with atomic number 2 and symbol He. It is a colourless, odourless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table.
What is proton?
Proton is a positively charged subatomic particle which is present in the nucleus of all atom.
What is neutron?
Neutron is a neutrally charged subatomic particle which is present in the nucleus of all atom.
What is electron?
Electron is a negatively charged subatomic particle which is present in the nucleus of all atom.
The difference between the lithium and helium atoms are:
- The electrons of helium are in a one filled shell. This means the bonding of helium with other elements is rare. On the other hand, lithium contains two shells, first is completely filled while the second shell has one of eight electrons making it a very reactive site with other elements.
- Lithium is an alkali metal. On the other hand, helium is a noble gas.
- Lithium has 3 protons, 3 electrons and 4 neutrons whereas helium has 2 protons, 2 electrons and 2 neutrons.
Hence, option C is the correct answer.
To learn more about Lithium and helium here
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