Answer:
B
Explanation:
You start from the highest energy level to the lowest. The arrangement is: 1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p. Each box in the configuration can hold up to 2 electrons. This rule tells you to fill all boxes of one particular subshell with 1 electron first, before double occupying them.
Answer:
hydrocarbons contain both Hydrogen and Carbon while organic compounds
are compounds in which one or more atoms of Carbon are covalently linked
with other elements
Explanation:
Please mark me as brainiest
The average that reflect the typical ratio of natural abundance of iron isotope is the atomic weight of the iron. Iron has four stable isotope that is iron 54 ,56, 57, 58. its atomic weight by mass is 9.27 x10^-22 grams
therefore number of atoms in cm^3 is
(7.87g/cm^3)/(9.27x10^-22)=8.49x10^21atoms/cm^3
Your answer would be shorter wavelength and equal speed !