Chemical properties of an atom are based upon the arrangement of valence electrons (electrons which can be gained, lost, or shared).
Answer: B) Fungi convert nitrogen in dead plants into ammonium, which converts proteins into ammonia.
Answer:
Electron
Explanation:
An Electron is a negatively charged particle.
A Proton is a positivley charged particle.
A Neutron has no charge (neutral).
C- main sequnce
Regulus A is a binary star consisting of a blue-white main sequence star of spectral type B7V, which is orbited by a star of at least 0.3 solar masses, which is probably a white dwarf. The two stars take approximately 40 days to complete an orbit around their common centre of mass.
