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const2013 [10]
2 years ago
12

aluminum (al) has three valence electrons and a total of three subshells. without using the periodic table, in which group and p

eriod is aluminum located?
SAT
2 answers:
fgiga [73]2 years ago
6 0

Answer:

its period 3 =)

Explanation:

Lady bird [3.3K]2 years ago
6 0

Answer: The correct answer is Group 3A, Period 3

Explanation:

Atomic number of aluminium is 13. As here n = 3 this means that aluminium element belongs to period.

Since, it contains 3 unpaired electrons. Therefore, in order to attain stability it will readily lose its valence electrons and hence, acquires as charge of +3.

This means that aluminium element belongs to group 3A and period 3.  As it is a p-block element.

Thus, we can conclude that aluminium is located in Group 3A, Period 3.

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Different codes for access code which are available are: 4000

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1st blank can be filled with the following possibilities, here the conditions are:

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From 1 to 9 except 4 there are  8 possible ways to fill that blank

<u>8</u>

2nd blank can be filled with any number between 0 to 9 in 10 possible ways

<u>8</u> <u>10 </u>

3rd blank can be filled with any number between 0 to 9 in 10 possible ways

<u>8</u> <u>10</u> <u>10</u>

4th blank can be filled with any odd numbers between 0 to 10 - 1,3,5,7,9

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Hence to conclude that 4000 available codes are there for the access security card

To know more about permutations and combinations please follow this link

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Based on the payoffs and the probabilities given, we can calculate the mean to be <u>0.8 shots made. </u>

<h3>What is the mean?</h3>

The mean in this scenario will be a weighted average of the probabilities that a number of shots will be made.

The mean will be:

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Find out more about weighted average at brainly.com/question/18554478.

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