Answer:
From least complex to most complex, the answer would be: cell - tissue – organ - system
Answer:
C
Explanation:
The section C is indicating the products of the reaction
108 grams of Aluminium = 4.0027369825989725 moles
Unpaired electrons are those electrons which exist singly in orbital, without making pair with other electron
CALCIUM:
Atomic Number 20
Electronic Configuration; 1s², 2s², 2p⁶, 3s², 3p⁶, 4s²
Number of Unpaired e⁻s; Zero
ARGON:
Atomic Number 18
Electronic Configuration; 1s², 2s², 2p⁶, 3s², 3p⁶
Number of Unpaired e⁻s; Zero
ALUMINIUM:
Atomic Number 13
Electronic Configuration; 1s², 2s², 2p⁶, 3s², 3p¹ (Ground State)
Electronic Configuration; 1s², 2s², 2p⁶, 3s¹, 3px¹, 3py¹ (Excited State)
Number of Unpaired e⁻s; 1 in Ground state and 3 in Excited State.
CARBON:
Atomic Number 6
Electronic Configuration; 1s², 2s², 2px¹, 2py¹ (Ground State)
Electronic Configuration; 1s², 2s¹, 2px¹, 2py¹, 2pz¹ (Excited State)
Number of Unpaired e⁻s; 2 in Ground state and 4 in Excited State