Answer:
Rubidium
Rubidium is the first element placed in period 5.
Answer:
a measure of how acidic/base water is.
Explanation:
hope it's helpful (◕ᴗ◕✿)
Mg₃N₂ + 6H₂O = 3Mg(OH)₂ + 2NH₃
Ur answer is going to be <span>NH 3 or D AND PLEASE MARK ME AS BRAINLIEST CAUSE IVE NEVER GOT BRAINLIEST BEFORE AND HAVE A GOOD DAY !</span>
Answer:
The first energy level is closest to the nucleus. The second energy level is a little farther away than the first. ... The electrons in the energy level farthest from the nucleus are called valence electrons. Atoms in the same column (group) in the periodic table have the same number of valence electrons.
Explanation:
