Question

name: q1 chemistry: u2l12 electron config day 2 teacher: date: uncommon schools prepwork chemistry prepwork part 1: follow the exemplar answer below and write the full electron configuration and orbital diagram for the given elements. # element # e- full e- configuration orbital diagram ex oxygen 8 e- 1s²2s²2p⁴ 1↓ 1↓ 1↓ 1 1 1s 2s 2p 1 lithium 2. aluminum 3 magnesium 4* phosphorous be uncommon. change history page 9

Explanation:

Step1: Determine electrons for Lithium

Lithium has atomic number 3, so 3 electrons.

Step2: Write electron - configuration

Follows Aufbau principle: $1s^{2}2s^{1}$

Step3: Draw orbital diagram

$\frac{1\downarrow}{1s}\frac{1\downarrow}{2s}$

Step4: Determine electrons for Aluminum

Aluminum has atomic number 13, so 13 electrons.

Step5: Write electron - configuration

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}$

Step6: Draw orbital diagram

$\frac{1\downarrow}{1s}\frac{1\downarrow}{2s}\frac{1\downarrow1\downarrow1\downarrow}{2p}\frac{1\downarrow}{3s}\frac{1\downarrow}{3p}$

Step7: Determine electrons for Magnesium

Magnesium has atomic number 12, so 12 electrons.

Step8: Write electron - configuration

$1s^{2}2s^{2}2p^{6}3s^{2}$

Step9: Draw orbital diagram

$\frac{1\downarrow}{1s}\frac{1\downarrow}{2s}\frac{1\downarrow1\downarrow1\downarrow}{2p}\frac{1\downarrow}{3s}$

Step10: Determine electrons for Phosphorus

Phosphorus has atomic number 15, so 15 electrons.

Step11: Write electron - configuration

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$

Step12: Draw orbital diagram

$\frac{1\downarrow}{1s}\frac{1\downarrow}{2s}\frac{1\downarrow1\downarrow1\downarrow}{2p}\frac{1\downarrow}{3s}\frac{1\downarrow1\downarrow1\downarrow}{3p}$

Answer:

#	Element	# e-	Full e- configuration	Orbital diagram
2	Aluminum	13 e-	$1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}$	$\frac{1\downarrow}{1s}\frac{1\downarrow}{2s}\frac{1\downarrow1\downarrow1\downarrow}{2p}\frac{1\downarrow}{3s}\frac{1\downarrow}{3p}$
3	Magnesium	12 e-	$1s^{2}2s^{2}2p^{6}3s^{2}$	$\frac{1\downarrow}{1s}\frac{1\downarrow}{2s}\frac{1\downarrow1\downarrow1\downarrow}{2p}\frac{1\downarrow}{3s}$
4	Phosphorus	15 e-	$1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$	$\frac{1\downarrow}{1s}\frac{1\downarrow}{2s}\frac{1\downarrow1\downarrow1\downarrow}{2p}\frac{1\downarrow}{3s}\frac{1\downarrow1\downarrow1\downarrow}{3p}$