Valence must be considered and whether the substance is an atom or molecule, for example: 2Na + Cl2=>2 NaCl
Answer:
the answer would be C: point source
Explanation:
because it specified the source of the pollution (manufacturing plant)
Answer:
El método científico es una metodología para obtener nuevos conocimientos, que ha caracterizado históricamente a la ciencia, y que consiste en la observación sistemática, medición, experimentación y la formulación, análisis y modificación de hipótesis. Las principales características de un método científico válido son .
Explanation:
Answer:
Options: 1, 2, 3 and 5 are correct
Explanation:
- As per the Aufbau priciple, electrons go into the subshell having the most minimal conceivable energy.
- By Hund's standard, the electron arrangement of carbon, which is , in this manner the carbon particle contains two unpaired electrons.
- Electrons can never have parallel turn in s-orbitals. If there should be an occurrence of Helium, it has 2 electrons with parallel turn in its 1s orbital.
- The plan of the orbitals in a multi electron molecule is not quite the same as the course of action in a solitary electron particle inferable from the electron-electron shocks in a multi electron iota.
- In the Li particle, the 3s, 3p, and 3d orbitals have various energies.
- Helium has 2 electrons during the 1s orbital and none during the 2s.
Answer:
+4
Explanation:
Oxidation number of neutral compound is 0
Oxidation number of hydrogen in methane is -1
C + (-1×4) = 0
C - 4 = 0
C = 4