Alpha particles are helium nucleus ! so answer is A !
it is made by ionization of helium, when both the electrons are out , then two unit of positive charge is one helium and thus called alpha particle !
Answer:
It's not atom it is an element Strontium.
Answer:
Structural
Explanation:
It is a structure that those organisms have that allow it to be better suited for a task or for that organism's environment.
What do you mean.....kelvin?
The shape here is tetrahedral.The central atom here is located at the center of the attached substituents (4) which are placed at the corner of the tetrahedron. The bond angles here is 109.4712206° ≈ 109.5° given that all attachments are of the same kind like methane. <span>
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