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The MOLECULAR ORBITAL FORMED has a NODE between the atoms is ans hereExplanation:As it is B.M.O. it cannot have node between two nucleus.

Hydrogen is a nonmetal and is placed above group in the periodic table because it has NS1 electron configuration LIKE the ALKALI metals. However, it VARIES greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.

Yes, metallic character increases down a groupExplanation:i} Metallic character REFERS to the LEVEL of REACTIVITY of a metal.ii} Non-metallic character relates to the tendency to accept ELECTRONS during chemical reactions.iii} Metallic tendency increases going down a group.iv} Non-metallic tendency increases going from left to right across the PERIODIC table.

Explanation: LITHIUM is more REACTIVE than beryllium Lithium is alkali metal with valency 1 and it is group 1 element DUE to which it can easily release its ELECTRON to form the stable CATION while the beryllium is group 2 element or alkaline earth metal with a valency 2 so as it needs to lose two electrons to form the stable cation and hence it will require more energy to react so lithium is more reactive than beryllium.

of conservation of energy, also known as the first law of thermodynamics, states that the energy of a closed system MUST remain constant—it can NEITHER increase nor DECREASE without interference from OUTSIDE. Please mark as BRAINLIST

An isolated SYSTEM is a thermodynamic system cannot exchange either energy or matter. OUTSIDE the boundaries of the system. An isolated system DIFFERS from a CLOSED system by the transfer of energy. closed system are only closed to matter energy can be exchanged across the system boundaries.Explanation:Please mark us Brainleints.

no HYDROGEN is LESS REACTIVE I THINK

no IRON is not an ORGANIC COMPOUND

Open system- Turbine, COMPRESSOR,pump , BOILER etc.CLOSED system- piston cylinder ARRANGEMENTS without VALVES, complete Rankine cycle is closed system though individual component is open system.Explanation:Pls mark me as a brainliest

A system in which the only forces that contribute to the momentum change of an individual object are the forces acting between the OBJECTS themselves can be CONSIDERED an isolated system. ... For such a COLLISION, TOTAL system momentum is conserved.

water ,CARBON DIOXIDE and table salt are EXP of compound ...

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tion:The primary DIFFERENCE that lies between these ORGANIC compounds and inorganic compounds is that organic compounds ALWAYS have a CARBON atom while most of the inorganic compounds do not contain the carbon atom in them. Almost all the organic compounds contain the carbon-hydrogen or a SIMPLE C-H bond in them.

(a) (i) The IUPAC name is 2-methoxypropane.(ii) The IUPAC name is 2-methylpropan-1-ol.(b)(i) Phenol reacts with conc. HNO3 in presence of CONCENTRIC H2SO4 to FORM 2,4,6-trinitrophenol.(ii) Phenol reacts with zinc dust to form benzene. (A) CH 3 −CH 2 −CH 2 −CH 2 −NH−C 2 H 5 In the above compound, the amine group is attached to the parent chain of 4 carbon atoms and an ETHYL group is attached to N-atom of the amine group, THUS the IUPAC name of the given compound is N-ethyl butan-1-amine.(B) CH 3 −CH 2 − CH∣CH 3 −NH−CH 3 In the above compound, the amine group is attached to 2 nd carbon atom of parent chain of 4 carbon atoms and one methyl group is attached to N-atom of amine group, thus the IUPAC name of the given compound is N-methyl butan-2-amine.

eactions can be PRIMARILY classified into five DIFFERENT types: Combination Reactions. Decomposition Reactions. Displacement Reactions.An oxidation-reduction reaction is any chemical reaction in which, by obtaining or losing an electron, the oxidation number of a molecule, atom, or ION varies. An example of a redox reaction is the formation of HYDROGEN fluoride. To study the oxidation and reduction of reactants, we should break the reaction down.

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KMnO₄Explanation:

reacts SLOWLY with cold water. The reaction PRODUCES a solution of lithium HYDROXIDE and RELEASES HYDROGEN gas.HOPE THIS WILL HELP YOU TO CLEAR YOUR DOUBT!

gen is not an alkali metal itself, but has some similar properties due to its simple one proton, one electron arrangement. For lithium, there are two 1 s electrons in an inner ORBIT and one 2 s electron in the outer orbit. The same pattern holds for sodium and potassium.▪︎All the alkali METALS react with hydrogen at 673 k except lithium reacts at 1073 k. Due to small size and high CHARGE to size ratio large AMOUNT of energy would be needed to form COVALENT bond in LiH.HOPE THIS WILL HELP YOU TO CLEAR YOUR DOUBT!

Lithium donot react with ethyne and form ethynilide DUE to its small size and high polarisibility. However, when it is converted to Li ion, its reducing nature increases which overcomes its size factor and thus it REACTS with ethyne.Explanation:PLS mark as BRAINLIEST I will FOLLOW and thank you

A SYSTEM can be either closed or open: A closed system is a system that is completely ISOLATED from its ENVIRONMENT. ... An open system is a system that has flows of information, ENERGY, and/or MATTER between the system and its environment, and which adapts to the exchange.

When a system's energy is defined as the sum of its "useful" energy, (e.g. that used to push a piston), and its "useless energy", i.e. that energy which cannot be used for EXTERNAL WORK, then entropy MAY be (most concretely) VISUALIZED as the "scrap" or "useless" energy whose energetic prevalence over the total energy ..

Let us TAKE simple examples. A closed system allows only energy transfer but no transfer of mass. EXAMPLE: a cup of coffee with a lid on it, or a simple water bottle. An open system is ONE which can allow mass as WELL as energy to flow through its boundaries, example: an open cup of coffee.

Examples of some COMMONLY used COMPOUNDS and their MOLECULAR FORMULA:Compound Name Compound FormulaAmmonia NH3Methane CH4Nitrous oxide N2OSalt NaCl

To understand the generation and maintenance of disequilibrium—and the ASSOCIATED low ENTROPY within the system—we NOTE that the EARTH system is not an isolated system, so that the nature of its thermodynamic state is substantially DIFFERENT.

Most organic COMPOUNDS making up our cells and body belong to one of four classes: carbohydrates, lipids, proteins, and nucleic acids. These molecules are INCORPORATED into our bodies with the FOOD we eat.Explanation:Hope my answer is correct, If yes PLS mark me as brainliest

lfide is an inorganic compound with the chemical formula of ZnS. This is the MAIN form of ZINC found in nature, where it MAINLY occurs as the mineral sphalerite. Although this mineral is usually black because of various impurities, the pure material is white, and it is widely used as a pigmentFormula: ZnSMolar mass: 97.474 g/molMelting point: 1,185 °CSolubility in WATER: negligibleDensity: 4.090 g/cm3Reaction = Zn (s) + S (s) → ZnS (s)

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Explanation:EQUATION of MOLARITY:M=10*d*MASS%/M2,where,M is molarity,d is density in g/cm3M2 is MOLAR mass of the soluteso M=10*1.202*28/98=3.43M

Water is much smaller than either of the previous substances and exhibits weaker dispersion FORCES, but its extensive HYDROGEN BONDING PROVIDES stronger intermolecular attractions, fewer molecules escaping the liquid, and a lower VAPOR pressure than for either diethyl ether or ethanol.

Hey dear,● ANSWERS -Chemical formula is deduced on the basis of CATION & anion in the compound.1) Sodium sulphate CONTAINS Na+ cation & (SO4)2- anion, thus molecular formula of sodium sulphate is Na2SO4.2) Potassium nitrate contains K+ cation & (NO3)- anion, thus molecular formula of potassium nitrate is KNO3.3) Ferric phosphate contains Fe2+ cation & (PO4)2- anion, thus molecular formula of ferrous phosphate is FePO4.4) Calcium oxide contains Ca2+ cation & O2 anion, thus molecular formula of calcium oxide is CaO.5) Aluminium hydroxide contains AL3+ cation & OH- anion, thus molecular formula of aluminum hydroxide is Al(OH)3.

parasitic relationship is ONE in which one organism, the parasite, LIVES off of another organism, the host, HARMING it and possibly causing death. The parasite lives on or in the body of the host. A few examples of parasites are TAPEWORMS, fleas, and BARNACLES.

Water is much smaller than either of the previous substances and exhibits weaker dispersion FORCES, but its EXTENSIVE hydrogen bonding PROVIDES stronger intermolecular attractions, fewer molecules escaping the liquid, and a lower vapor pressure than for either diethyl ETHER or ethanol.

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tion:The METALLIC character of potassium is higher than that of sodium and lithium. Because, the metallic character INCREASES when MOVING down the group in the periodic table. And the ability to LOSE the electron from the VALENCE shell is increasing. ... Therefore, potassium has more metallic character than sodium and lithium.