Cov txheej txheem:

Muaj pes tsawg protons nyob rau hauv 30mg2 +?
Muaj pes tsawg protons nyob rau hauv 30mg2 +?

Video: Muaj pes tsawg protons nyob rau hauv 30mg2 +?

Video: Muaj pes tsawg protons nyob rau hauv 30mg2 +?
Video: Yog muaj 5 yam no ua pes tsawg lub hom phiaj los yeej tiav 2024, Kaum ib hlis
Anonim

Ntawm no, tus lej atomic yog 4, yog li beryllium muaj 4 electrons thiab 4 protons . Txij li thaum, atomic mass yog 9, tus naj npawb ntawm neutrons yog 5 (= 9 - 4).

Thiab cov lus nug yog, pes tsawg protons 137ba2 + muaj?

Oscar L. No nucleus muaj 56 proton ua thiab 137-56 = 81 neutrons.

Tom qab ntawd, lo lus nug yog, lub caij twg muaj 6 protons thiab 5 neutrons? Atomic Number

Lub npe Protons Neutrons
Helium 2 2
Lithium 3 4
Beryllium 4 5
Boron 5 6

Ib yam li ntawd, muaj pes tsawg electrons protons thiab neutrons nyob hauv?

4

Yuav ua li cas koj nrhiav tau tus naj npawb ntawm protons?

Tus naj npawb ntawm protons, neutrons, thiab electrons hauv atom tuaj yeem txiav txim siab los ntawm cov txheej txheem yooj yim

  1. Tus naj npawb ntawm protons nyob rau hauv lub nucleus ntawm lub atom yog sib npaug rau atomic tooj (Z).
  2. Tus naj npawb ntawm electrons nyob rau hauv ib tug nruab nrab atom yog sib npaug zos rau tus naj npawb ntawm protons.

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