4. Alat ukur yang biasa digunakan untuk mengukur berat emas adalah
Answer (4)
The three reasons that scientists found Rutherfor's nuclear atomic model to be fundamentally incomplete are as follows:
Number 1) according to Rutherford, the electrons revolve in completely circular orbits. However, if this was true the charged electron would simply fall into the nucleus after losing energy. Number 2) According to Rutherford's model, the nucleus itself only consisted of protons. However, as we now know due to research in quantum mechanics, if this was true this would make the atom unstable due to the cycle of attraction and repulsion. Number 3) The neutrons which have also been discovered since to be an important part of the atom, are not mentioned at all in Rutherford's model.
The correct answer is:
1.how electrons are organized in a cloud
2. why electrons are not attracted into the positively charged nucleus
3. variations in chem behavior between elements ;
Rutherford's nuclear atomic model was seen as incomplete because it failed to explain the stability of electrons, did not account for the existence of neutrons in the nucleus, and lacked a proper description of electron behavior based on quantum mechanics. These limitations prompted the search for more advanced atomic theories. Ultimately, this led to the development of the Bohr model and further quantum models of the atom.
;
Jawaban:Alat ukur yang biasa digunakan untuk mengukur berat emas adalah timbangan digital dengan tingkat ketelitian tinggi, yang disebut juga:1. Timbangan Gram Presisi (Precision Digital Scale)Digunakan di toko emas dan laboratorium.Mampu mengukur hingga dua atau tiga angka di belakang koma (misalnya: 0,001 gram).Sangat sensitif dan akurat.2. Timbangan Carat (Carat Scale)Jika mengukur berat batu mulia, alat ini digunakan karena 1 karat = 0,2 gram.Namun untuk emas, biasanya tetap menggunakan satuan gram.
