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The ANSWER is ALCL3
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Halogens

It contains Fluorine, CHLORINE,Bromine,Iodine and astatine.

Astatine is radio active.

Because the halogen elements have seven valence electrons, they only REQUIRE one additional electron to FORM a full OCTET. This characteristic makes them more reactive than other non-metal groups.

NA + = NAOH +h2

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2Na+2H2O GIVES 2NAOH + H2

NEWLANDS LAW of octaves was found to be APPLICABLE only upto CALCIUM

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DOMAIN IS THE COLLECTION OF THE METAL IONS ,IN ANNTEFERROMAGNETISM ,MAGNETIC MOMENT DUE TO ONE DOMAIN IS CANCELLED BY OTHER AS RESULT MAGNETIC MOMENT IS 0.

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6.022*10^23 PARTICLES

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Cosmic records of the earliest days of the universe, 13.8 BILLION years ago, are starting to accumulate. Soon, we may have all the CLUES we need to piece together the events that transformed HYDROGEN and cosmic energy to the blooming universe astronomers study today.

Today , scientists announced the discovery of some of the earliest traces of radiation left over from the Big Bang ever recorded. Using highly sensitive instruments, they found hydrogen atoms that had captured radiation from the formation of the universe’s very first stars. These stars formed about 180 MILLION years after the massive event that transformed the universe from a mass of hydrogen and energy into organized galaxies.

Atoms can have different energy levels. At a baseline level, the atom’s NUCLEUS (composed of protons and neutrons) holds onto its electrons at a particular distance. When atoms are exposed to more energy, through higher temperatures or radiation, their electrons may be pulled farther away from the nucleus. This state is called an excited state. Usually, atoms in an excited state will intermittently fluctuate back down to their ground state.

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A pressure COOKER workson the principle of COOKING at apressure higher than the atmospheric pressure. Due to this, water boils at a temperature higher than 100 DEG C, which leads to faster cooking. Pressure SEALS maintain the temperature.

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Bond-dissociation ENERGY (BDE or D0) is one MEASURE of the strength of a chemical bond. It can be defined as the standard enthalpy change when abond is cleaved by homolysis, with reactants and products of the homolysis reaction at 0 K .......

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The AZIMUTHAL quantum number is a quantum number for an atomic orbital that DETERMINES its orbital angular momentum and DESCRIBES the shape of the orbital.

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WHAT ARE AKALI..METALS..
=》Low ionization energies to MAKE +1 cations
=》M+ ions are spherical and HARD (low polarizability)
=》 High 2nd ionization energies prevent the +2 oxidation state
=》Most bonding INTERACTIONS are ionic due to low polarizability (LI+ is strongest in terms of Lpolarizing ability due to size/charge ratio – in other words it forms the most covalent compounds)
=》Li is least reactive, Cs is most reactive

《AND THATS WHY THE POTASSIUM IS #ALKALI# TYPE OF METAL》
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An electrically CHARGED atom or group of atoms formed by the loss or GAIN of one or more electrons, as a cation (POSITIVE ION), which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (NEGATIVE ion), which is created by an electron gain and is attracted to the anode.

H3PO4

3+31 +64 = 98 , molecular MASS.

1 litre of 0.1 molar solution contains 98 x 0.1 = 9.8 g

250 ml contains 9.8/4 = 2.45 g

eq. mass of H3PO4 = 98/3 = 32.67 g

there FORE no.of equivalents 250 ml of 0.1 molar = 2.45/32.67 g

= 0.075

1) VALENCY of CARBONATE radical : 2-
2) Formula of BICARBONATE radical : HCO3-
3) Formula of NITRATE radical : NO3-
4) Formula of sulphate radical :

<P>n is the coefficient of the sub shell "p" since "L" is 1 therefore the orbital is 2P orbital. HOPE this helped :)

In chemistry an organic COMPOUND is generally any chemical compound that CONTAIN CARBONS

Nylon saree's are much better than COTTON saree's because they are cheaper, light weight, durable, WRINKLE free, does not absorb water and easy to wash.

Whereas cotton sarees ALSO have its own merits like they can absorb your sweat more EFFICIENTLY giving you a relief in SUMMER time

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Frequency = 1Time period1Time period

Time period = TOTAL distance coveredVelocity=2πrvTotal distance coveredVelocity=2πrv

Frequency = v2πrv2πr

The velocity (V2)(v2) and RADIUS (r2)(r2) of the 2nd2nd Bohr's orbit :

rn=(0.53×10−10n2/z)mrn=(0.53×10−10n2/z)m

r2=(0.53×10−10(22)m=2.12×10−100mr2=(0.53×10−10(22)m=2.12×10−100m

vn=2.165×106(z/n)m/svn=2.165×106(z/n)m/s

v2=2.165×106(1/2)=1.082×106m/sv2=2.165×106(1/2)=1.082×106m/s

Frequency=v22πr2=1.082×1062(π)(2.12×10−10)v22πr2=1.082×1062(π)(2.12×10−10)

v=8.13×1016Hz

Acids have H3O+ IONS in more NUMBER and there ph VALUE is less than 7
Bases have OH- ions in more number and bases have ph value more than 7.
When acids and bases get reacted they PRODUCE salt and water
Salt is neutral

Orbitals that have the same value of the principal quantum number FORM a shell. Orbitals WITHIN a shell are divided into subshells that have the same value of the angular quantum number . Chemists describe the shell and subshell in which an orbital belongs with a two-character CODE such as 2P or 4f

If a molecule is stable, the SUM of the formal charges of each SUBSTITUENT atom should be 0. It STILL agrees somewhat with the Lewis-concept, but LIKE configuration 1 I would only expect a smaller contribution.

Electric discharge in gases means FLOW of electric current through gases. This BASICALLY arises DUE to ionisation of GAS  in presence of a electric field. Gases  become conducting UPON ionisation .

Depending on the electronic CONFIGURATION, chemical PROPERTIES vary due to the VARIATION in their atomic NUMBERS.

It is well known that POTASSIUM chloratedecomposes at a HIGHER temperature to give potassium chloride and oxygen. It MELTS at 355 °C and decomposes at 480 °C (Fig. 1). To reduce thedecomposition temperature, MANGANESE dioxide is the standard catalyst. The search for more efficient and cheap catalyst is on.

Because properties of elements basically depend UPON valency of element and along PERIOD valency increases FIRST and then DECREASE as a result properties of elements vary along period

22.4L at STP= 6.022×10*23 molecules.
1.12L will contain=6.022×10*23×1.12/22.4
=3.011×10*22molecules.
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De Broglie wavelength


A/c to BOHR's

velocity of electron in first orbit


Now LET here is the ATOM of Hydrogen
then,
d


Now, In De Broglie wavelength


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As elevation INCREASES, atmospheric pressure decreases because air is LESS dense at HIGHER altitudes. Because the atmospheric pressure is lower, the vapour pressure of the liquid NEEDS to be lower to reach boiling point.

Our body becomes warm due to fever so to BRING it to a moderate temperature DOCTORS ask us to COVER our HEAD with a wet TOWEL

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1.2 G of mg (At. mass 24) will produce MgO equal to 0.05 MOL

Acid anhydrides: OXIDES which produce acidic solutions on REACTION with WATER are called acid anhydrides. NO2 forms TWO acids when it reacts with water and hence it is called double or mixed acid anhydride.

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The FORMULA of MAGNESIUM HYDROXIDE is--------

MG(OH)2

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Ca3N2 is the molecular FORMULA of CALCIUM NITRIDE.

Calcium Nitride is also CALLED Tricalcium Dinitride

Because if they are subjected to pressure changes, SOLID will (may) be converted to LIQUID STATE and hence REACTION may remain incomplete.