Answer: Option (C) is the correct answer.
Explanation:
Ions are the species that form when a neutral atom either gains or loses an electron.
For example, atomic number of beryllium is 4 and its electronic distribution is 2, 2. So, in order to attain stability by losing its valence electrons Be will form a ion.
Whereas atomic number of helium is 2 and its electronic configuration is .
Since, it has completely filled octet so, it will neither gain or lose an electron as it is stable in nature. Hence, it will not form ions.
Thus, we can conclude that the atoms He element will NOT typically form ions.
<u>Answer:</u> The mass of sulfur dioxide gas at STP for given amount is 16.8 g
<u>Explanation:</u>
At STP conditions:
22.4 L of volume is occupied by 1 mole of a gas.
So, 5.9 L of volume will be occupied by =
Now, to calculate the mass of a substance, we use the equation:
Moles of sulfur dioxide gas = 0.263 mol
Molar mass of sulfur dioxide gas = 64 g/mol
Putting values in above equation, we get:
Hence, the mass of sulfur dioxide gas at STP for given amount is 16.8 g
In ground-state electron configuration, the<u> principal quantum number</u> (n), <u>the orbital</u> (s, p, d, or f), and the total number of <u>electrons</u> are used to represent electron configurations.
Case 1 Ground-state electron configuration of elements.
A) Chlorine: 1s²2s²23s²3
B) Cesium: 1s² 2s²2p⁶ 3s²3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 6s¹
C) Vanadium: 1s²2s²2p⁶3s²3p⁶3d³4s²
D) Rhenium: 1s² 2s² 2p⁶ 3s² 3p⁶3d¹⁰ 4s²4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d⁵ 6s²
Case 2 : Number of valence electron in atoms
A) Sn -Tin - Four valence electrons
B) La - Lanthanum - Three valence electrons
C) Mn - Manganese - Seven valence electrons
D) Zn- Zinc - Two valence electrons
Case 3 Ground-state electronic configuration of ions
A) Co⁺³ : 1s² 2s² 2p⁶ 3s² 3p⁶4s¹3d⁵
B) Mo⁺² : 1s² 2s² 2p⁶3s²3p⁶ 4s² 3d¹⁰ 4p⁶5s² 4d²
C) Ra⁺² : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁶
D) I⁻ : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶
Learn more about Quantum numbers here brainly.com/question/2292596
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