Explanation:
12)
a) Sodium + oxygen = ?
When sodium reacts oxygen its forms sodium oxide as a product.
b) magnesium + fluorine = ?
When magnesium reacts with fluorine its forms magnesium fluoride as a product.
13)
a)
Decomposition of mercury(II) oxide on heating gives out mercury and oxygen gas.
b)
The electrolytic decomposition of water gives out hydrogen gas amd oxygen gas.
Answer:
so the answer that you get isn't wrong? i dont know
Answer:
e. electrons jump from higher energy levels to lower levels
Explanation:
Atoms emit visible and ultraviolet light as electrons fall from higher levels to lower level. Whenever there is a fall from a higher level to lower level, the electron loses energy that is equivalent to the energy difference of the two energy levels. This energy manifests itself as light which includes Visible and UV light. The correct option is; E.
Metallic property also rises with increasing atomic radius. Metallic character reduces with an increase in the amount of outer electrons.
<h3>What is
atomic radius?</h3>
A chemical element's atomic radius, which is typically the average or typical distance between the nucleus's core and the outermost isolated electron, serves as a gauge for the size of an atom. There are numerous non-equivalent definitions of atomic radius since the border is not a clearly defined physical entity. Van der Waals radius, ionic radius, metallic radius, and covalent radius are the four most frequently used definitions of atomic radius. The atomic radius is often measured in a chemically linked condition because it is difficult to isolate individual atoms to measure their radii separately. However, theoretical computations are easier when considering isolated atoms.
To learn more about atomic radius from the given link:
brainly.com/question/13607061
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