H₃PO₄ + H₂O:
H₃PO4 + H₂O --> 3 H₃O⁺ + PO₄³⁻
hope this helps!
Personally I think b is the best answer but if not b then A
Answer:
The correct answer is B difficult to lose but easy to move.
Explanation:
Metals are chemical substances in which the electrons of the outer orbital or valence orbital are hold very tightly through intramolecular attraction by the nucleus present in the center of the atom of the metal.As a result it is very difficult to remove electron from the valence orbital of metal.
As electrons are hold very tightly by the nucleus of a metal,the electrons are present in very compact manner within metal which helps metal to be an excellent conductor.
The answer is (2). You can think about this question in terms of the Bohr's model of the atom or in terms of quantum chemistry. In the Bohr model, electrons exist in discrete "shells," each respresenting a fixed spherical distance from the nucleus in which electrons of certain energy levels orbit the nucleus. The larger the shell (the greater the "orbit" radius), the greater the energy of the "orbiting" electron (I use quotations because electrons don't actually orbit the nucleus in the traditional sense, as you may know). Thus, according to the Bohr model, a third shell electron should be farther from the nucleus and have greater energy than an electron in the first shell.
The quantum model is differs drastically from the Bohr model in many ways, but the essence is the same. A larger principal quantum number indicates 1) greater overall energy and 2) a probability distribution spread a bit more outward.