cheminis ryšys-kovalentinis(polinis) Flashcards

1
Q

kas yra polinis rysys

A

kai jungiasi skirtingo elektrinio neigiamumo elementu atomai,

bendroji elektronu pora yra pasislinkusi arciau vieno atomo, turincio didesni elektrini neigiamuma, branduolio pusen.

del to elektriniai kruviai molekuleje pasiskirsto nevienodai

kovalentinis rysys sudarytas elektronu poros, nesimetriskai issidesciusiose abieju branduoliu lauke, vadinamos poliniu

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2
Q

elektrinis neigiamumas

A

atomo branduolio savybe traukti elektronus

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3
Q

elektrinus neigiamumas perioduose

A

is kaires i desine dideja
del didejancio branduolio kruvio

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4
Q

elektrinis neigiamumas grupese

A

is virsaus, zemyn dideja
del didejancio elektroniniu sluoksniu skaiciaus

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5
Q

didziausias elektrinis neigiamumas

A

fluoro

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6
Q

maziausias elektrinis neigiamumas

A

cezio

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7
Q

atomas kurio elektrinis neigiamumas molekuleje didesnis igyja….

A

igyja neigiamaji dalini kruvi
o atomas nuo kurio bendra elektronu pora nutolo, igyja teigiamaji dalini kruvi

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8
Q

tarp ko susidaro polinis

A

tarp slirtingu nemetalu kuriu chemines savybes panasios

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9
Q

polinius rysius sudaro

A

du skirtingi nemetalai

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10
Q

kada reikia rasyti dalini kruvi

A

strukturinej formulej

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11
Q

dalinio kruvio zenklai

A

S+
S-

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12
Q

ke reiskia S+ S-

A

dalini kruvi

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