Answer:
lithium=atomic no.=3
Explanation:
-1 charge on lithium means one electron has added to it .Thus,
Li-1=no. of electrons=3+1=4
Answer:
D
Explanation:
sound is produced when the matter vibrates
Gas to solid ( a ) is correct i think
There are two main types of physical weathering: Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart. Exfoliation occurs as cracks develop parallel to the land surface a consequence of the reduction in pressure during uplift and erosion.
which substance has a giant covalent structure and contains atoms of more than one elements?
Explanation:
answer:methane
