Answer: 3:2
Explanation: (10.14÷3.38)÷(8.42÷4.21)=1.5=3/2
There are 5 valence electrons in a atom of phosphorus.
Answer:
a) 3.0076 E24 atoms
Explanation:
∴ mass Cl2 = 354.22 g
∴ molar mass Cl2 = 70.906 g/mol
⇒ mol Cl2 = (354.22 g)*(mol/70.906 g) = 4.9956 mol
⇒ atoms Cl2 = (4.9956 mol)*(6.022 E23 atoms/mol)
⇒ atoms Cl2 = 3.008 E24 atoms
Answer:
Explanation:
Sodium:
Na₁₁ = 1s² 2s² 2p⁶ 3s¹
Iron:
Fe₂₆= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶
Bromine:
Br₃₅ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵
Barium:
Ba₅₆ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s²
Cobalt:
Co₂₇ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷
Silver:
Ag₄₇ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹ 4d¹⁰
Tellurium:
Te₅₂= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁴
Radium:
Ra₈₈ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s²
<em>réponse</em>: <em>verdadero</em>
<em>Explication</em>:
