Sejarah perkembangan struktur atom bermula sejak lebih 100 tahun dahulu. Bermula dengan John Dalton yang mengatakan atom adalah seperti bola sfera yang keras, sehinggalah dikemaskini oleh JJ Thomson, Ernest Rutherford, Neils Bohr dan akhir sekali disempurnakan oleh James Chadwick. Jom kita lihat struktur atom yang terakhir itu..
Atom sebenarnya terdiri daripada 3 lagi zarah yang lebih kecil, iaitu proton, neutron dan elektron. Ketiga-tiga ini kita panggil zarah subatom (sebahagian daripada atom).
Proton dan neutron berada dalam nukleus bagi sesuatu atom, manakala elektron pula mengelilingi nukleus.
Proton bercas positif, elektron bercas negatif dan neutron pula neutral (tidak bercas).
Nombor proton = bilangan proton
Nombor nukleon = bilangan proton + bilangan neutron
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BalasPadamVery useful notes...
BalasPadamThank you for sharing this educational article. The explanation of atomic structure is clear, well-organized, and easy to understand, especially for students who are learning chemistry fundamentals. I appreciate how the article covers protons, neutrons, electrons, and the development of atomic models in a straightforward way. Resources like this are extremely helpful for building a strong foundation in science and making complex topics more accessible. Thanks for creating and sharing such valuable learning material.
BalasPadamvisit https://subwaysurfersdl.org/