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AlexFokin [52]
3 years ago
15

State the periodic law, and explain its relation to electron configuration. (Use Na and K in your explanation.)

Chemistry
1 answer:
mina [271]3 years ago
5 0

Answer:

Explanation:

The period law state that when elements are listed in order of their atomic numbers, the elements fall into recurring groups, so that there is a recurrence of similar properties at regular intervals.

Na and K in the periodic table fall into the same group, this is because they both have one electrons in their outermost shell.

Na 11 -1s2 2s2 2p6 3s1

K 19 - 1s2 2s2 2p6 3s2 3p6 4s1

They share similar chemical and physical properties. Na and K are very reactive metals, they can loose/donate their outermost electron to non metals in other to attain stable octet state.

The form ionic compound when they react with non metals.

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How many rings does an alkane have if its formula is c10h16?
stepladder [879]

If it is saturated compound then we can calculate the double bond equivalent which will be equal to the number of rings in the compound

the double bond equivalent can be calculated using following formula

DBE = (C + 1 -\frac{H}{2} - \frac{X}{2} +\frac{N}{2} )

Where

H = number of Hydrogen atoms

C = number of carbon atoms

X= number of halogen atoms

N = number of nitrogen atoms

DBE = (10 + 1  - 16 / 2 ) = 3

Hence there are three rings in the compound

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3 years ago
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Answer:

b

Explanation:

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3 years ago
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5 0
3 years ago
If a given aqueous solution at 298 K contains [H+] = 1.0 × 10-9, what is the [OH-]?
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Answer:

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Explanation:

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2:38

Explanation:

4 0
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