Gram molecular volume of oxygen at STP is
Gram molecular volume of oxygen at STP is
Options
(a) 3200 cm³ (b) 5600 cm³ (c) 22400 cm³ (d) 11200 cm³
Correct Answer:
5600 cm³
Explanation:
Gram molecular volume of oxygen at STP […]
Chemistry
If ionization potential for hydrogen atom is 13.6eV, then ionization potential
If ionization potential for hydrogen atom is 13.6eV, then ionization potential for He⁺ will be
Options
(a) 54.4 eV (b) 6.8 eV (c) 13.6 eV (d) 24.5 eV
Correct Answer:
54.4 eV
Explanation: […]
The correct set of four quantum numbers for the valence electron of rubidium atom
The correct set of four quantum numbers for the valence electron of rubidium atom(Z=37) is
Options
(a) 5,1,1,+½ (b) 6,0,0,+½ (c) 5,0,0,+½ (d) 5,1,0,+½
Correct Answer:
5,0,0,+½
Explanation:
₃₇Rb=₃₆[Kr] 5s Its valence electron […]
If 30 mL of H₂ and 20 mL of O₂ reacts to form water. what is left at the end
If 30 mL of H₂ and 20 mL of O₂ reacts to form water. what is left at the end of the reaction?
Options
(a) 10 mL of H₂ (b) 5 mL of […]
The number of gram molecules of oxygen in 6.02 x 10²⁴ CO molecules is
The number of gram molecules of oxygen in 6.02 x 10²⁴ CO molecules is
Options
(a) 10 gm molecules (b) 5 gm molecules (c) 1 gm molecules (d) 0.5 gm molecules
Correct Answer: […]
The order of filling of electrons inthe orbitals of an atom will be
The order of filling of electrons inthe orbitals of an atom will be
Options
(a) 3d, 4s, 4p, 4d, 5s (b) 4s, 3d, 4p, 5s, 4d (c) 5s, 4p, 3d, 4d, 5s (d) […]
The maximum number of electrons in a subshell is given by the expression
The maximum number of electrons in a subshell is given by the expression
Options
(a) 4l– 2 (b) 4l+ 2 (c) 2l+ 2 (d) 2n²
Correct Answer:
4l+2
Explanation:
No. of orbitals in […]
Maximum number of electrons in a subshell of an atom is determined
Maximum number of electrons in a subshell of an atom is determined by the following:
Options
(a) 2l + 1 (b) 4l – 2 (c) 2n² (d) 4l + 2
Correct Answer:
4l + […]
The weight of iron which will be converted into its oxide(Fe₃O₄) by the action of 18g
The weight of iron which will be converted into its oxide(Fe₃O₄) by the action of 18 g of steam on it will be (at. wt. of Fe=56)
Options
(a) 168 g (b) 84 […]
The set of quantom number for 19th electrons of chromium(Z=24) is
The set of quantom number for 19th electrons of chromium(Z=24) is
Options
(a) 4,0,0,+½ (b) 4,1,-1,+½ (c) 3,2,2,+½ (d) 3,2,-2,+½
Correct Answer:
4,0,0,+½
Explanation:
(Z= 24) ≡ 1s²,2s²,2p⁶,3s²,3p⁶,4s¹,3d⁵ For 19th electron (i.e.,4s¹) n=4,n […]