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Trends in the PERIODIC tableFamilies of the periodic table are often grouped by METALLIC properties. ... ELEMENTS with low electronegativity TEND to have more metallic properties. So, the metallic properties of elements tends to decrease across a period and increase down a group.

Here's your answer EXPLANATION:A REACTION that releases HEAT is exothermic negative enthalpy .

In general, atomic RADIUS DECREASES across a period and increases down a group. ... Down a group, the number of energy levels (n) increases, so there is a greater distance between the nucleus and the OUTERMOST orbital. This RESULTS in a larger atomic radius.

YesCarbon is a STABLE element.Good NIGHT

A change in entropy INDICATES the DISORDER of an ISOLATED system has DECREASED and the process is spontaneous

no CARBON ha 6 electron andExplanation:cinfigeration is (2 ,4 and the VALENCY is 4

please MARK me brainliest dear friendExplanation:D OPTION is CORRECT

S.I. UNIT of work is Joule. Work done when a force of 1 NEWTON displaces the BODY through a distance of 1 METRE in the DIRECTION of force.

जिंदगी में कोई प्यार से प्यारा नही मिलता,जिंदगी में कोई प्यार से प्यारा नही मिलता,जो है पास आपके उसको सम्भाल कर रखना,क्योंकि एक बार खोकर प्यार दोबारा नही मिलता

2-C, 3-A, 4-DExplanation:2. Yes all compound contain more than one ELEMENT, but all COMPOUNDS are homogeneous mixtures, as they are PURE substances.3. Camphor DIRECTLY converted to gas, by the PROCESS of sublimation.4. Stem is H2O, which is a compound. And composition of compound is fixed.

fhjhjfgkgihjupglgkvmvvjld ll do CC JCC u go ll llExplanation:ghclz am m BBC OIL go to the DAY of the day of the

The most METALLIC ELEMENT is FRANCIUM.

The law of conservation of mass STATES that in a CHEMICAL reaction mass is NEITHER created nor destroyed.Explanation:HOPE my answer is correct, If yes pls mark me as brainliest

Since potassium is located at the start of period 3, and BROMINE at the END of the same period, potassium will have a LARGER atomic RADIUS than bromine, and thus the largest atomic radius of the four GIVEN atoms.

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Pure ENERGY is any field energy, like potential energy, any kinetic energy, like a fast moving particle, but no mass energy of STABLE or NEARLY stable massive particles which would require a process to turn into work.Explanation:HOPE my answer is CORRECT, If yes pls mark me as brainliest

tion:The least metallic elements is EXACTLY the opposite to metallic elements. They are LOCATED at the right corner uppermost elements . For eg HELIUM , neon , FLUORINE , oxygen have the least metallic character.

There are THREE types of systems in THERMODYNAMICS: open, closed, and isolated. An open SYSTEM can exchange both ENERGY and matter with its surroundings. An isolated system is ONE that cannot exchange either matter or energy with its surroundings.

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Glad to help! Explanation:Ethoxy ethane produces DANGEROUS EXPLOSIVE peroxide when exposed in air and light, which can cause irritation to eyes and INHALATION problems. So its really harmful! Hope it helps you understand...Good wishes!

In 2nd compounds ONE I think A is correct but R is false. In 4TH both A and R are falseExplanation:As compound is a PURE substance(2 question)

photosynthesis is a process where plants produce there FOOD and leaves out OXYGEN and TAKES CARBON dioxide

a BINARY COMPOUND of HYDROGEN with a METAL.

what is the WINNER of the FIRST ONE to

tion:From the lens FORMULA 1/F=1/v-1/uso from the GIVEN values -1/25=1/v-(-1/50)-1/25=1/v+1/501/v=1/25+1/50do LCM and FIND the value of vmagnification m=v/usubstitute the values of v and U in the above formula..

Hydrogen is not an alkali metal itself, but has some similar properties due to its simple one PROTON (loctated in the nucleus), one electron arrangement. The lone electron exists in a s -orbital around the nucleus. Cesium Orbitals. This one electron is very easily REMOVED during chemical reactions.Explanation:Hope my answer is CORRECT, If YES pls mark me as brainliest

The law of conservation of energy states that energy can neither be created nor DESTROYED - only converted from one form of energy to another. This MEANS that a system always has the same amount of energy, unless it's ADDED from the outside. ... The only WAY to use energy is to transform energy from one form to another.

If you heat an ORGANIC compound in a closed-system DISTILLATION apparatus that is not properly vented, it can build pressure and POTENTIALLY burst. The resulting EXPLOSION can CAUSE dangerous flying glass, hot, corrosive chemicals to spatter and potentially hazardous fumes to be released.Explanation:Pls mark me as a brainliest

ent BOND is a chemical bond that involves the sharing of ELECTRON pairs between atoms. These electron pairs are known as shared pairs or BONDING pairs, and the stable balance of attractive and repulsive FORCES between atoms, when they share electrons, is known as COVALENT bonding.

( • )( • )EXPLANATION:PLEASE MARK me BRAINLIEST

photosynthesis is a process where PLANTS PRODUCE there food and LEAVES out OXYGEN and takes CARBON dioxide

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option C assertion is true REASON is falsepls mark me as brainliestExplanation:

tion:(0.0)tere BINA HAPPY kaise rhungamere FRNDS hi NHI rhenge to happy kaise rhunga ?..

ভাবেমৌলের অভাবেরক্তচাপ

Option:- AExplanation: The CORRECT thermodynamic CONDITIONS for the spontaneous reaction at all temperatures is △H<0 and △S>0Under these conditions, ΔG=ΔH−TΔS<0The correct thermodynamic conditions for the spontaneous reaction at all temperatures is △H<0 and △S>0Under these conditions, ΔG=ΔH−TΔS<0Note: for spontaneous reactions, ΔG<0, for NON spontaneous reactions, ΔG>0, for reactions at