Hello folks, I have 5 questions about chemistry: 1) Substances can be divided into pure substances and mixtures. Pure substances are then divided into chemical elements and chemical compounds. Are element molecules elements or compounds, since they are molecules but made of only one element? Or do only metals count as elements, since non-metals form…
Hello, I have a question: what was an electron configuration and a noble gas configuration again?
Hello, I have a question. I should recognize that there are three different methods by which an atom achieves the noble gas configuration.
please help me people
If the period indicates the number of atomic shells, and the atomic number indicates the number of electrons, why is calcium in the fourth period? That doesn't make sense, does it? Because 20 electrons don't need four shells?
The chemical bond types are simple A) Si- must be covalent Csf-ionic Ne- stable (I would put it this way) Cu-metallic …bond. B)I usually know such diagrams with the energy level occupancy and not as a charge density distribution of the valence electrons. Question 1: Is the charge density distribution higher at c than at…
Hello everyone! I'm in 9th grade and in a few days I'm writing a chemistry paper on basic chemistry and I have a question about it. Tin is a metal, so it donates electrons in chemical reactions. To achieve the appropriate electron configuration of a noble gas, it would have to gain four electrons, which…
Why is magnesium only allowed to have 2 electrons in the K shell, 8 electrons in the L shell, and 2 electrons in the M shell? How can I determine this, for example, in the case of sulfur or phosphorus?
Hello, Is the number of electrons in Niels Bohr's shell model correct (the shell model only refers to the main groups, not to the side groups)? K shell: 2 electrons L-shell: 8 electrons M shell: 8 electrons N-shell: 18 electrons
Do atoms have to be from the same main group to form a chemical bond?
Because according to the formula 2n^2 18 electrons fit into the third shell. So why don't they strive to form enough bonds to fill the bowl? Why is the third shell satisfied in the elements of the third period when the elements form so many electron pair bonds that there are 8 electrons in the…