Answer:
The atoms in the first period have electrons in 1 energy level. The atoms in the second period have electrons in 2 energy levels. The atoms in the third period have electrons in 3 energy levels. The atoms in the fourth period have electrons in 4 energy levels.
Answer:
CaCl2
Explanation:
For every calcium there's 2 chlorine
Answer:
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Explanation:
aku x nk jwb . benda bole cri kt buku . ni la anak zmn skg ni . semua nk mudah
Answer:
the amount of valence electron, cna be found in the periodic table, which is called the atomic number which is top of the symbol
hope this helps!!! best fo luck to you