Answer:
E. Thomson
Explanation:
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.
https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/history-of-atomic-structure/a/discovery-of-the-electron-and-nucleus
The offspring will have white hair is the correct answer, as white hair is the recessive gene.
Let us assume that there are 100 grams of substance present. The masses of the constituents will be:
C - 58.51 g
H - 7.37 g
N - 100 - 58.51 - 7.37 = 34.12 g
Next, we determine the moles of each substance by dividing by the atomic masses:
C - 58.51/12 = 4.88
H - 7.37/1 = 7.37
N - 34.12/14 = 2.44
Dividing all of the moles by the lowest number of moles, which is 2.44 of nitrogen, we get the ratio:
C - 2
H - 3
N - 1
The empircal formula becomes C₂H₃N
Next, we apply Graham's Law of diffusion, which mathematically is:
v₁/v₂ = √M₂ / √M₁
Let species 1 be helium, meaning v₁/v₂ = 3.2 and M₁ = 4
3.2 = √M₂ / √4
M₂ = 40.96
The mass of the empircal formula was:
12 * 2 + 1 * 3 + 14 = 41
The empircal formula is the molecular formula as their masses are approximately the same. This compound is C₂H₃N
The answer is no. 4. Bismuth (Bi)
Across the period, from left to right, metallic character
decreases, meaning, when it is going down, the last element in a group will
have the most metallic character. Since Bismuth (bi) is the last element, it is
the most metallic.
The arrangement of the group 15 elements in ascending rate
of metallic character is: N (Nitrogen) P (Phosphorus), As (Arsenic), Sb
(Antimony) and Bi (Bismuth). Bismuth has the lowest rate of electronegativity
and ionization energy thus, it is more likely to lose an e- than the rest of
the elements of the said group, which is why it is considered the most metallic.
Answer:
electron cloud
Explanation:
i just did the edge test .