Q. 6.147 - An Introduction to General, Organic, and Biological Chemistry

Question

Complete the following table for atoms or ions: 

Step-by-Step Solution

Answer

Atom or Ion	Number of protons	Number of Electron	Electrons loss/ Gained
${\mathrm{K}}^{+}$	${19}^{+}$p	$18 e^{-}$	$1 e^{-}$ lost
${\mathrm{Mg}}^{2+}$	${12}^{+}$p	$10 e^{-}$	$2 e^{-}$ lost
$O^{2-}$	$8^{+}$p	$10 e^{-}$	$2 e^{-}$gained
${\mathrm{Al}}^{3+}$	${13}^{+}$p	$10 e^{-}$	$3 e^{-}$ lost

Step 1: Given Information

We need to complete the table.

Step 2: Simplify

Atom or Ion	Number of Protons	Number of Electrons	Electrons Lost/Gained
${\mathrm{K}}^{+}$	${19}^{+}$p	$18 e^{-}$	$1 e^{-}$ lost
${\mathrm{Mg}}^{2+}$	${12}^{+}$p	$10 e^{-}$	$2 e^{-}$ lost
${\mathrm{O}}^{2-}$	$8^{+}$p	$10 e^{-}$	$2 e^{-}$ gained
${\mathrm{Al}}^{3+}$	${13}^{+}$p	$10 e^{-}$	$3 e^{-}$ lost