Question

Define the following terms 1st atom 2nd isotope 3rd atomic number 4th atomic mass number 5th moderator in nuclear reactor

Answer 1

1. The small particle Of an element  which may or may not have independent existence but take part in chemical reaction. 2. One or two more forms Of a chemical element which differ in physical character but same in chemical character. 3. The no of protons present in an chemical element. 4. The mass of an atom Of a particular chemical substance. 5. Is a medium that reduces the speed of Fast neutrons by Turning them into thermal neutrons.

Answer 2

Answer:

α. αท ατσм is ∂єƒiทє∂ αs τнє sτrυcτυrαℓ αท∂ ƒυทcτiσทαℓ υทiτ σƒ α мαττєr. τнє τєrм "ατσм" cσмєs ƒrσм τнє grєєк ωσr∂ ωнicн мєαทs iท∂ivisiвℓє, вєcαυsє ατσмs αrє τнє sмαℓℓєsτ τнiทgs iท τнє υทivєrsє αท∂ cσυℓ∂ ทστ вє ∂ivi∂є∂. ατσмs αrє мα∂є υρ σƒ τнrєє sυвατσмic ραrτicℓєs ℓiкє ρrστσทs, ทєυτrσทs αท∂ єℓєcτrσทs.

в.isστσρєs : isστσρєs αrє ατσмs τнατ нαvє sαмє ατσмic ทυмвєr вυτ ∂iƒƒєrєทτ мαss ทυмвєr. isστσρєs нαvє sαмє ทυмвєrs σƒ ρrστσทs вυτ ∂iƒƒєrєทτ ทυмвєrs σƒ ทєυτrσทs.

τнєsє αrє sσмє cσммσท єxαмρℓєs σƒ isστσρєs: 3

2нє, 4

2нє, 12

6c, 14

6c, 235

92υ, 239

92υ, 289.

c.ατσмic ทυмвєr: τнє ทυмвєr σƒ ρrστσทs iท τнє ทυcℓєυs σƒ αท ατσм, ωнicн is cнαrαcτєrisτic σƒ α cнємicαℓ єℓємєทτ αท∂ ∂єτєrмiทєs iτs ρℓαcє iท τнє ρєriσ∂ic ταвℓє. ατσмic ทυмвєr is αℓsσ єqυαℓ τσ ทυмвєrs σƒ єℓєcτrσทs iท αท ατσм.

ƒσr єxαмρℓє :

ατσмic ทυмвєr σƒ cαrвσท = 6

ατσмic ทυмвєr σƒ ทiτrσgєท = 7

ατσмic ทυмвєr σƒ σxygєท = 8

ατσмic ทυмвєr σƒ мαgทєsiυм = 12

∂.ατσмic мαss ทυмвєr : iτ is τнє sυм σƒ τσταℓ ทυмвєr σƒ ρrστσทs αท∂ ทєυτrσทs ρrєsєทτ iท α ทυcℓєυs.

ατσмic мαss ทυмвєr = ทυмвєr σƒ ρrστσทs + ทυмвєr σƒ ทєυτrσทs.

ατσмic ทυмвєr = ทυмвєr σƒ ρrστσทs = ทυмвєr σƒ єℓєcτrσทs.iτ is ∂єทστє∂ вy ʑ.

мαss ทυмвєr = ทυмвєr σƒ ρrστσทs + ทυмвєr σƒ ทєυτrσทs. iτ is ∂єทστє∂ вy α.

ƒσr єxαмρℓє : cαrвσท ατσм iτs, ทυмвєr σƒ ρrστσท = 6

ทυмвєr σƒ ทєυτrσทs = 6

ทυмвєr σƒ єℓєcτrσท = 6

ατσмic ทυмвєr (ʑ) = ทυмвєr σƒ ρrστσทs = ทυмвєr σƒ єℓєcτrσทs = 6

мαss ทυмвєr (α) = ทυмвєr σƒ ρrστσท + ทυмвєr σƒ ทєυτrσทs = 6 + 6 =12

є.мσ∂єrατσr iท ทυcℓєαr rєαcτσr: мσ∂єrατσr σƒ α ทυcℓєαr rєαcτσr is α sυвsταทcє τнατ sℓσωs ∂σωท τнє sρєє∂ σƒ ทєυτrσทs. iท τrα∂iτiσทαℓ ทυcℓєαr rєαcτσrs, τнє мσ∂єrατσr is τнє sαмє τнiทg αs τнατ σƒ cσσℓαทτ ℓiкє ωατєr.