#12 PLEASE HELP IM TAKING A TIMED TEST

Chemistry

1 answer:

Goshia [24]2 years ago

3 0

Answer:

Option B

Explanation:

For the problem in question 12, option B is the correct choice. It rightly expresses how electrons will fill the third energy level of aluminum.

Aluminum is an element with 13 electrons. It has 3 energy levels.

The shell notation is given as 2 8 3

Sublevel notation = 1s² 2s² 2p⁶ 3s² 3p¹

The third energy level is given as 3s² 3p¹

We can represent it as: ⇅ ↑

3s² 3p¹

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Needed help plzzz on this chemistry homework.

mrs_skeptik [129]

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2 years ago

What is the oh- in a solution with a poh of 5.71

Rudik [331]

Answer:- The hydroxide ion concentration of the solution is $1.95*10^-^6$ .

Solution:- The formula used to calculate pOH from hydroxide ion is:

$pOH=-log[OH^-]$

When pOH is given and we are asked to calculate hydroxide ion concentration then we multiply both sides by negative sign and take antilog and what we get on doing this is:

$[OH^-]=10^-^p^O^H$