Answer:
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
Answer:
Sound energy is what we get from an MP3 player
It uses Electrical energy
Explanation:
Answer: the object is transparent.
Explanation:
let me know if this helps
Answer:
well its D Mg + 2HCl ----- MgCl2 + H2
Explanation:
Because Magnesium Replaces Hydrogen
The statement that best describes the trend in first ionization enery of elements on the periodic table is:
<span>It generally decreases down a group because valence electrons are farther from the nucleus.
The first ionization energy measures how difficult is to release an electron from the outermost shell. The higher the ionization energy the more difficult it is to release an electron, the lower the ionication energy the easier to release an electron.
As the atomic number of the atom increases (which is what happens when you go down a group) the furthest the outermost shell of electrons will be (the size of the atoms increases) and so those electrons require less energy to be released, which means that the ionization energy decreases.
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