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Ask QuestionPosted by Dinkal Patel 4 years, 9 months ago
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Posted by Ekta Chasta 4 years, 9 months ago
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Yogita Ingle 4 years, 9 months ago
N2O is more polar than CO2. This is because CO2 is linear and symmetrical. Its net dipole moment is zero (O=←C=→O).N2O is linear but symmetrical. It is considered as a resonance hybrid of the following two structures
:N..−=N+=O:..↔:N≡N+=..O:..−
It has a net dipole moment of 0.116D.
Posted by Priya Kumari 4 years, 9 months ago
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Yogita Ingle 4 years, 9 months ago
Due to the stable configuration, they do not accept an electron and hence they have large positive electron gain enthalpy.
An electron has to enter the next higher principal quantum level which leads to a very unstable electronic configuration.
Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
An electron has to enter the next higher principal quantum level which leads to a very unstable electronic configuration.
by taking electron thair energy will be increased, but all atom wants to live in their least energy state...<hr>
very short answer it is difficult to add an extra electron due to stable electronic configuration. so it needs energy to do so.
Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
Posted by Bhawna Chaudhary 4 years, 9 months ago
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Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
$$CH4 +O2 → CO2 + 2H2$$
Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by Siddharth .(.$Id) 4 years, 9 months ago
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Posted by ?????? ?? 4 years, 9 months ago
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Gaurav Seth 4 years, 9 months ago
1) All the alkali metals are highly reactive elements since have a strong tendency to lose the single valence s-electron to form uni positive ions having inert gas configuration.
2) This reactivity arises due to their low ionisation enthalpies and high negative values of their standard electrode potential.
3) Due to their strong tendency to lose the single valence electron ,alkali metals also act as a strong reducing agents. Reactivity of an element is measured in terms of its reducing character.
4) Ionization enthalpy is a measure of the tendency of an atom to lose electrons in the gaseous state.Thus, lower the ionization enthalpy, greater is the tendency of an element to lose electron and hence stronger is the reducing character or higher is the reactivity of the element.
5)The ionization enthalpies of alkali metal decreases down the group, therefore, their reducing character or reactivity in the gaseous state increases from Li to Cs , i.e. Li< Na< K< Rb<Cs.
Posted by Gautam Kumar 4 years, 9 months ago
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Posted by Pk✍️ . 4 years, 9 months ago
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?????? ?? 4 years, 9 months ago
Yogita Ingle 4 years, 9 months ago
An aliphatic compound or aliphatic hydrocarbon is an organic compound containing hydrogen and carbon atoms that are usually linked together in chains that are straight.
Posted by Puja Das 4 years, 9 months ago
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Gaurav Seth 4 years, 9 months ago
The important characteristics of transition metals are:
(i) All transition elements are metallic in nature, e.g., all are metals.
(ii) These metals exhibit variable oxidation states.
(iii) Transition metal atoms or ions generally form the complexes with neutral, negative and positive ligands.
(iv) Compounds of transition metals are usually coloured.
(v) The compounds of these metals are usually paramagnetic in nature.
(vi) Transition metals and their compounds act as good catalysts, i.e., they show catalytic activities.
(vii) These metals form various alloys with other metals of the series.
(viii) These metals form interstitial compounds with C, N, B and H.
Posted by Ka If 4 years, 9 months ago
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Yogita Ingle 4 years, 9 months ago
Electron gain enthalpy generally becomes more negative across a period as we move from the left to the right. Within a group,m electron gain entahlpy becomes less negative down a group. However, adding an electron to the 2p2p-orbital leads to the greater repulsion than adding an electron to the larger 3p3p-orbital. Hence, the element with the most negative electron gain enthalpy is chlorine, and the one with the least negative electron gain enthalpy is phosphorus.
Posted by Ayesha Sarma 4 years, 9 months ago
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Posted by Kajal Verma 4 years, 9 months ago
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Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
Thus, $$100 g$$ of iron oxide contains $$69.9 g$$ iron and $$30.1 g$$ dioxygen.
The number of moles of iron present in $$100 g$$ of iron oxide are $$\frac{69.9}{55.8}=1.25$$.
The number of moles of dioxygen present in 100 g of iron oxide are $$\frac{30.1}{32}=0.94$$.
The ratio of the number of oxygen atoms to the number of carbon atoms present in one formula unit of iron oxide is $$\frac{2×0.94}{1.25}=1.5:1=3:2$$.
Hence, the formula of the iron oxide is $$Fe2O3$$<hr> $$\mathbb{YOUR\ ANSWER \ IS \ COMPLETED} $$
Dεερακ Ȿιηɠꜧ 4 years, 9 months ago
Posted by ?????? ?? 4 years, 9 months ago
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Royal Thakur ? 4 years, 9 months ago
Posted by Kajal Verma 4 years, 9 months ago
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Gaurav Seth 4 years, 9 months ago
The number of atoms present in 100 amu of helium is 25 atoms.
To find:
Number of atoms = ?
Solution:
The number of atoms present in 100 amu of helium is to be calculated by using simple unitary method knowing that the a.m.u. is the atomic mass unit which itself represent the mass.
So thereby, we need to know the "mass of one atom" and that can be divided to know the "number of atoms".
Therefore,
The "mass of one atom" of helium is known to be 4 a.m.u.
Thereby,
Posted by Kajal Verma 4 years, 9 months ago
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Jagdish 4 years, 9 months ago
Posted by ?????? ?? 4 years, 9 months ago
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Meghna Thapar 4 years, 9 months ago
Viscosity is a measure of a fluid's resistance to flow.
It describes the internal friction of a moving fluid. A fluid with large viscosity resists motion because its molecular makeup gives it a lot of internal friction. The SI unit for dynamic viscosity η is the Pascal-second (Pa-s), which corresponds to the force (N) per unit area (m2) divided by the rate of shear (s-1).
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Drashti Sanghvi 4 years, 4 months ago
6Thank You