Answer:
D
Explanation:
The bottommost layer is always the oldest.
Answer:
<em>Figure attached </em>
Explanation:
A. Lewis dot structure
Number of electrons
Number of electrons by H = 1 e
Number of electrons by O = 6 (3)
Number of electrons by O = 18 e
Number of electrons by N = 5 e
Total in HNO3 = 24 e
Resonance structures
In resonance structures we mostly prefer 1st two structures because 3rd one have high charge so it is very unstable form then the other two. Figure 4 contains the hybrid structure which is mostly used in literature.
Explanation:
7,801,000,000 = 7.801 × 10^9