Elements X, Y and Z Have Atomic Numbers 6,9 and 12 Respectively. Which One: Forms an Onion Forms a Cation Has Four Electrons in Its Valence Shell? - Chemistry
Elements X, Y and Z have atomic numbers 6,9 and 12 respectively. Which one:
Forms an onion
Forms a cation
Has four electrons in its valence shell?
Atomic numbers of X Y Z
6 9 12
(2, 4) (2, 7) (2, 8, 2)
Y(2, 7) forms an anion.
Z(2, 8, 2) forms a cation.
X(2, 4) has four electrons in the valence shell.
Concept: Atomic Number (Z)
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