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bond order of hpo3 2-

Posted by Biplab Mandal 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Ayush Jana 3 years, 11 months ago

The bond order of hpo3^2- is = ' 0 '

ANSWER

How many quantum numbers are required to specify an orbital...?

Posted by Royal Thakur ? 3 years, 11 months ago

CBSE > Class 11 > Chemistry

4 answers

Pk? . 3 years, 11 months ago

Hello bhai? kaise ho?? Yrr kaha tum bhi in faltu ke bakwas me phass jate ho...waise kal maine bahot miss kiya tumhe.....bhai jara apna syllabus batana for 1 st terminal.

Karandeep Sharma 3 years, 11 months ago

3 orbitals are required

First Name 3 years, 11 months ago

4 quantum numbers are there .
Principal quantum number : Denoted by n ,gives the number of shell
Azimuthal quantum number : Denoted by l, gives the account of subshell or orbital
Magnetic quantum number : Denoted by m_l , states the sub -orbital
Magnetic quantum number : Denoted by m_s, states the spin of electron

Yogita Ingle 3 years, 11 months ago

To designate an orbital n,l and m quantum numbers are required and s represents the (spin ) of the electron present in the orbital.

ANSWER

What is enthalpy of combustion

Posted by Sm .. 3 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 3 years, 7 months ago

Enthalpy of combustion of a substance is the change in enthalpy produced when one mole of the substance is completely burnt in air or oxygen at a given temperature.

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Enthalpy of sublimation??

Posted by Sm .. 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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what is enthalpy of vaporization

Posted by Sm .. 3 years, 7 months ago

CBSE > Class 11 > Chemistry

1 answers

Sia ? 3 years, 7 months ago

The enthalpy of vaporization, also known as the heat of vaporization or heat of evaporation, is the amount of energy that must be added to a liquid substance to transform a quantity of that substance into a gas. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.

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What is functional groups??

Posted by Pk✍️ . 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

<Input Type ="Text">Kamlesh 3 years, 11 months ago

Functional group is a function of a group - f(x)

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What is silicate

Posted by Priya Kumari 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Varsha Baboria 3 years, 11 months ago

Silicate are mineral that contain silicon and oxygen and one or more other elements. Quartz is the silicates and is the most common mineral. Silicon and oxygen are the basic building blocks for most of the minerals on the Earth's crust and mantle.

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What will be the IHD of c6H13Cl.

Posted by Priya Kumari 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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How many atoms of hydrogen are in 67.2L of H2 at STP?

Posted by Sony Chauhan 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Paresh Purohit 3 years, 11 months ago

36.132 X 10²³ Atoms....

4Thank You

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Predict the sign of change entropy for the following point ★ freezing of liquid water ★bolling of egg ★cl²-2cl ★H² + o²-H²o

Posted by Deachen Chodol 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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the percentage of carbon is ca (hco3)2is

Posted by S D Gamers 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 3 years, 11 months ago

Composition of Calcium Hydrogen Carbonate - C₂H₂CaO₆

ElementS symbol Mass Percent Calcium Ca 24.7225%

Hydrogen H 1.2435%

Carbon C 14.8178%

Oxygen O 59.2162%

ANSWER

VSEPR theory?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

$$VESPR- theory \ says\ that\ the \electrons\ arrange\ themselves\ at\ minimum\ repulsion\ $$
$$lone- pair-lone- pair. repulsion > lone -pair- electron- pair .repulsion> electron -pair- electron- pair. repulsion$$

Yogita Ingle 3 years, 11 months ago

The Valence Shell Electron Pair Repulsion Theory abbreviated as VSEPR theory is based on the premise that there is a repulsion between the pairs of valence electrons in all atoms, and the atoms will always tend to arrange themselves in a manner in which this electron pair repulsion is minimalized. This arrangement of the atom determines the geometry of the resulting molecule.

The different geometries that molecules can assume keeping with VSEPR theory can be seen in the illustration provided below.

VSEPR Theory – Different Geometries that Molecules can Assume

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P4+NO3 -1--->PO4*-3 +NO2 Balance the rxn by half rxn method

Posted by Dinkal Patel 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Drashti Sanghvi 3 years, 7 months ago

solve equation by oxidation number method : p4 + no3^-1 gives po4^-3 + no2 oxidation no of p4 is 0, no3^-1 is 5, po4^-3 is 5 & no2 is 4 oxidation: p4 gives 4po4^-3 increases by 20 × 1 reduction :no3^-1 gives no2 decreases by 1 × 20 p4 gives 4po4^-3 20no3^-1 gives 20no2 p4 + 16h2o gives 4po4^-3 20no3^-1 gives 20no2 + 20h2o balanced equation is p4 + 20no3^-1 + 8h+ gives 4po4^-3 + 20no2 + 4h2o

6Thank You

ANSWER

Which is more polar - CO2 or N2O....???...? Give reason.....✍️

Posted by Ekta Chasta 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 3 years, 11 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.

ANSWER

The electron gain enthalpy of noble gases is positive. Explain

Posted by Priya Kumari 3 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Yogita Ingle 3 years, 11 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 3 years, 11 months ago

Noble Gases have a full filled orbital in their last shell, they have a very stable electronic configuration, they don't need any extra electron.
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.

3Thank You

ANSWER

Why sp4 and sp5 hybridization isn't possible? ?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

4 answers

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

Oh! to app 6 baje soti ho , or 3 baje uthti ho ??

3Thank You

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

$$\textsf{Vese aap itna kyo jagti ho, this is not a good way to study }$$

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

$$\texttt{scroll to see, full }$$ $$\textfrak{*sp_{3} }$$

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

$$\mathfrak{Because\ 'p' \ subshell \ has\ only \ 3\ orbital\ which\ get\ completed \ in \sp-{3}\ hybridization\. }$$

ANSWER

How many moles of methane are required to produce 22g CO² after combustion.

Posted by Bhawna Chaudhary 3 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

$$CH_{4(g)}+2O_{2(g)} \overset{\Delta}{\longrightarrow} CO_{2(g)} + 2 H_{2} O_{(l)}$$ ✓✓

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

$$CH_{4(s)} + O_{2(g)} \longmapsto CO_{2(g)} + 2H_{2(g)}$$

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

22g of Carbon dioxide contain ½mole of Carbon so you need ½mole carbon in methon
$$CH4 +O2 → CO2 + 2H2$$

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Maths?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Chemistry?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Oxidation number?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Average oxidation number?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Reducing agents?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Oxidizing agents?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

1 answers

Dεερακ Ȿιηɠꜧ 3 years, 11 months ago

Gazab ???? 2nd book start ho gaya aapka ??

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Oxidation number of hydrogen?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Oxidation number of oxygen in Ozonide form?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Can oxidation number of Oxygen be positive?

Posted by Siddharth .(.$Id) 3 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

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Chemical property of S- block element... ✍✍✍✍✍✍

Posted by ?????? ?? 3 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

?????? ?? 3 years, 11 months ago

Ha moti.. ???

Gaurav Seth 3 years, 11 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.