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Ask QuestionPosted by Aadya Singh 4 years, 11 months ago
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Posted by Aadya Singh 4 years, 11 months ago
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Gaurav Seth 4 years, 11 months ago
S o l u t i o n:
The chemical formula of FeSo4 . 7 H2O
= 55.8 + 32.1 + 16x4 + 7x18
= 277.9
The percentage of water of crystallization=
= (7 x 18) / 277.9 x 100 %
= 45.34 %
Posted by Aadya Singh 4 years, 11 months ago
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Amrit Preet Kaur 4 years, 10 months ago
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Ojhal Sharma 4 years, 10 months ago
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Sia ? 4 years, 4 months ago
Pyrophosphates are phosphorus oxyanions that contain two phosphorus atoms in a P-O-P linkage. A number of pyrophosphate salts exist, such as Na₂H₂P₂O₇. Often pyrophosphates are called diphosphates. The parent pyrophosphates are derived from partial or complete neutralization of pyrophosphoric acid.
Posted by Aadya Singh 4 years, 11 months ago
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Sia ? 4 years, 4 months ago
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Posted by Tanya Rawat 4 years, 11 months ago
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Gaurav Seth 4 years, 11 months ago
All s orbitals are spherical in shape and have a spherical symmetry.This means that the wave function will depend on the distance from the nucleus and not on the direction.In any atom,the size of the s orbital increases as the principal quantum number of the orbital increases but its geometrical shape remains same..
Posted by A@Kash Kumar 4 years, 11 months ago
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Pk ⚔️ 4 years, 11 months ago
Pk ⚔️ 4 years, 11 months ago
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Neel Singh 4 years, 11 months ago
Meghna Thapar 4 years, 11 months ago
Electrons within an atom can be assessed according to the shell, subshell, and orbital to which they are assigned. These assessments are based on the quantum mechanical model. Shells are numbered as n=1,2,3,4, etc. and increase in size and energy as they get further away from the nucleus.
Shells can be subdivided into subshells. The maximum number of subshells is equivalent to the shell number. For example, when n=1 (first shell), only one subshell is possible and when n=2 (second shell), two subshells are possible.
There are four different types of subshells. These various types of subshells are denoted by the letters s, p, d, and f. Each subshell has a maximum number of electrons which it can hold: s - 2 electrons, p - 6 electrons, d - 10 electrons, and f - 14 electrons. The s subshell is the lowest energy subshell and the f subshell is the highest energy subshell.
As was mentioned previously, the shell number is equal to the possible number of subshells. Thus, when n=1, the only subshell possible is the 1s subshell. When n=2, two subshells are possible the 2s and 2p. When n=3, three subshells are possible the 3s, 3p, and 3d. This means that in the first shell only two electrons are possible and they would be found in the 1s (2 electrons) subshell. In the second shell, 8 electrons are possible and would be found in the 2s (2 electrons) and the 2p (6 electrons) subshells.
Each subshell is further divided into orbitals. An orbital is defined as a region of space in which an electron can be found. Only two electrons are possible per orbital. Thus, the s subshell may contain only one orbital and the p subshell may contain three orbitals.
Each orbital has its own distinct shape. An s orbital found in a s subshell is spherical, p orbitals found in p subshells are two-lobed, and d orbitals found in d subshells are four-lobed. Since d and f orbitals do not play an important role in organic chemistry, they will not be discussed further.
Since there are three possible orbitals per p subshell, each orbital adopts its own orientation. The px orbital lies along the x axis, the py orbital lies along the y axis, and the pz orbital lies along the z axis.
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Chetan Maheshwary 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
In the science of spectroscopy, under physics, the Rydberg constant is a physical constant relating to atomic spectra. It is denoted by R∞ for heavy atoms and RH for Hydrogen. Rydberg constant was first arising from the Rydberg formula as a fitting parameter. Later Neils Bohr has calculated it from fundamental constants.
Posted by Pritam Tamang 4 years, 11 months ago
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Yogita Ingle 4 years, 11 months ago
Lyman series of hydrogen atom lies in ultraviolet region, Balmer series lies in visible region while Pfund and Paschen series lie in infrared region.
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Gaurav Seth 4 years, 11 months ago
Molecular mass of {tex}KHSO_(4)=39+1=32+64=136.0u{/tex}
Percentage of potassium =(39u) / (136u)×100 = 28.68%
Percentage of hydrogen =(1u) / (136u)×100 = 0.735%
Percentage of sulphur =(32u) / (136u)×100 = 23.53%
Percentage of oxygen =(64u) / (136u)×100 = 47.06%
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