Well actully the thunder is heard before the lightning because light travles faster than sound
Pluto's orbit is within the Kuiper Belt and has a special relationship to Neptune's orbit.
Answer:
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
Explanation:
Iron is soft, bright white metal.
Its symbol is Fe, atomic number is 26 and atomic mass is 55.85 amu.
It is present in group 8 of periodic table.
It is used to make the steel.
It is malleable and ductile used to make the sheets.
It is good conductor of heat and electricity because of moveable electrons that can easily move from one to another atom.
Its density is 7.87 g/cm³.
Electronic configuration:
Fe₂₃ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
Abbreviated electronic configuration:
Fe₂₃ = [Ar] 3d⁶4s²
Answer:- A) glucose has covalent bonds.
Explanations:- Glucose is a molecule that has carbons, oxygen and hydrogen. All these are non metals and do sharing of electrons to gain their nearest noble gas configurations and so glucose has covalent bonds.
Table salt is NaCl. Na is a metal and Cl is a non metal so the bond formed between them is ionic.
Steel alloy has Iron and carbon and so it would have ionic and metallic bonding.
Iron oxide also has a Iron(metal) and oxygen(non metal) and so it has ionic bond.
So, the only and only correct choice is A) Glucose.
