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Mumz [18]
4 years ago
15

The vertical columns on the periodic table are called groups, how many groups are there on the periodic table?

Chemistry
1 answer:
Kitty [74]4 years ago
5 0
8 groups, 1 to 7 and most people call group 8 group 0 because the noble gases in group 0 have the outer electron shell full, so for example argon has 18 electrons, so it’s structure is 2.8.8 with its outer shell full. Also the number of the last shell defies what group it’s in, for example sodium is in group 1 so it’s structure is 2.8.1. Hope this helps.
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The fluorine-17 nuclide radioactively decays by electron capture.
allochka39001 [22]

Answer: daughter nucleus is Oxygen-17

Explanation: electron and proton form a neutron in nucleus.

Mass number remains same and number of proton decreases.

3 0
3 years ago
How do you solve a double replacement reaction?
exis [7]
It’s like where two compounds positive ions which are called “Cations” remember paws for Cats paw as positive. And Negative ions which are called Anion, remember it as A Negative Ion= Anion.
And they would switch places to form a new compounds or products. Look at the Example!

8 0
3 years ago
Determine the oxidation number of each element in these compounds or ions. (a) au2(seo4)3 (gold(iii) selenate) au = se = o = (b)
Stels [109]
<span>                                                    Au</span>₂(SeO₄)₃

                                         O = -2 × 4 = -8
                                             Se  =  + 6
So,
                                            (+6 - 8) = -2

Means (SeO₄) contains -2 charge, Now multiply -2 by 3
                                             
                                             -2 ₓ 3 = -6
Means,
                             Au₂ + (-6) = 0
               
                            Au₂  = +6
Or,
                            Au  =  6 / 2

                            Au  = +3
Result:
                            Au  =  +3
                            Se  =  +6
                            O   =  -2

                                                      Ni(CN)₂


Cyanide (CN⁻) contains -1 charge,
So,
                              N  =  -3
                              C  =  +2
Then,
                                         Ni + (-1)₂  =  0

                                               Ni - 2  =  0
Or,
                                                     Ni =  +2
Result:
                            N  =  -3
                            C  =  +2
                           Ni  =  +2




6 0
4 years ago
Which of the following did your answer include?
IgorC [24]

Answer:

check all 4

Explanation:

3 0
3 years ago
HELP! What are 5 changes for testing out a fidget spinner no websites
Sedbober [7]

Answer:

Explanation:

Can you explain a bit further? once u do, ill edit my answer and tell you :) But to use a fidget spinner, u have to put ur thumb at the bottom and index finger at the top, and spin it with you other fingers if thats what you meant

6 0
3 years ago
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