Soal Kimia - Teori Atom

The explanation for the given correct answer is that according to Thomson's atomic theory, electrons are scattered randomly within an atom. This means that the electrons are not fixed in specific orbits or positions, but rather move freely throughout the atom. This idea was proposed by J.J. Thomson in the late 19th century and was later replaced by the more accurate Bohr model of the atom.

The correct answer is 2n^2. This formula represents the maximum number of electrons that can occupy a specific electron shell in an atom. The "n" in the formula represents the principal quantum number, which determines the energy level or shell of the electron. By squaring the principal quantum number and multiplying it by 2, we can determine the maximum number of electrons that can occupy that shell. This formula aligns with Niels Bohr's theory of the atom, where each electron shell has a maximum capacity.

Ernest Rutherford mengajukan teori atom setelah mengetahui adanya partikel alfa yang terpantul pada emas. Ini diketahui dari eksperimen penembakan partikel alfa pada logam yang dilakukan oleh Rutherford. Dalam eksperimen ini, sebagian partikel alfa mengalami pantulan yang signifikan, menunjukkan adanya inti atom yang padat dan bermuatan positif di dalam atom. Temuan ini mengarah pada pengembangan model atom yang lebih maju, yang kemudian dikenal sebagai model atom Rutherford.

The given statement is incorrect. Rutherfordium is an element that was discovered in 1964, not 1997. It is named after Ernest Rutherford, a physicist who made significant contributions to the understanding of atomic structure. Rutherfordium has an atomic number of 106.

The hidden weakness in Rutherford's atomic theory is that it fails to explain why electrons do not get pulled into and fall into the atomic nucleus.

James Chadwick is the correct answer because he is the scientist who discovered the neutron. In 1932, Chadwick conducted experiments that led to the discovery of the neutron, a subatomic particle with no charge located in the nucleus of an atom. His work confirmed the existence of the neutron, which was crucial for understanding atomic structure and nuclear reactions. Chadwick's discovery earned him the Nobel Prize in Physics in 1935.

The given statement is not a postulate of Dalton's Atomic Theory. Dalton's theory did not include any statement about the electrical properties of atoms.

Erwin Schrodinger proposed the theory of quantum mechanics, which describes the behavior of atoms and subatomic particles. This theory is based on the idea that particles can exist in multiple states simultaneously, known as superposition, until they are observed or measured. Schrodinger's equation, known as the Schrodinger equation, is a fundamental equation in quantum mechanics that describes the wave function of a particle and allows for the calculation of its properties. This theory revolutionized our understanding of the microscopic world and laid the foundation for modern physics.

The correct answer is Teori Atom Mekanika Kuantum. This theory states that the position of an electron cannot be determined with certainty. According to the principles of quantum mechanics, electrons exist in a state of probability, represented by their wave functions. The wave function gives the likelihood of finding an electron in a particular location, but it does not provide a definite position. This uncertainty in electron position is a fundamental aspect of quantum theory.

In the Rutherford experiment, alpha particles are deflected because they experience repulsive forces from the positively charged nucleus.

The correct answer is "Hantaran listrik pada tabung hampa." J.J. Thomson's discovery of the electron is related to the conduction of electricity in vacuum tubes. The presence of electrons allows for the flow of electric current in these tubes, which are commonly used in various electronic devices.