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tamaranim1 [39]
3 years ago
8

Do you notice a pattern in the charge for elements in each group? Explain.

Chemistry
1 answer:
MrRissso [65]3 years ago
7 0

Answer:

Below are some patterns in the charge for elements in each group.

Group 1 elements : 1 valence electron and form ions with charge +1

Group 2 elements : 2 valence electrons and form ions with charge + 2

Group 3 elements : 3 valence electrons and form ions with charge + 3(there are some exceptions as well)

Elements in groups 4 and 5 are unpredictable also the D block elements consist of multiple oxidation states..

Group 6 elements : 6 valence electrons, form ions with charge -2

Group 7 elements: 7 valence electrons, form ions with charge -1  

The octet rule is being followed, the elements form either ionic bond or covalent bond to fulfill it.

eg: when a K atom forms a K+ ion, the ion has the same electron configuration as the noble gas Ar (argon).

When an O atom gains 2 electrons to form the O²⁻ ion, the ion has the same electron configuration as the noble gas Ne (neon).  

Note: Boron (B) is in Group 3 but doesn't form ions.

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Answer:

electricity

Explanation:

I'm not 100% sure though

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What is the relationship between mass and the end stages of stars
aleksandr82 [10.1K]
The mass of stars affect how they end. 

Stars with greater mass sometimes end with supernovas, a giant explosion, which can result in black holes or neutron stars, or sometimes nothing.

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Haha hope this sorta helped :)


6 0
3 years ago
3.-4.
creativ13 [48]

The power for the first tank is 2kW  and the second tank is 150 kw for the theoretical pumping power lifts a solution with a density of 1200 kg/m³ from a tank to a reservoir.

<h3>What is power?</h3>

Power is the amount of energy in kilowatt which is required to do some work that needs energy known as power it is the multiplication of pressure and the flow of liquid.

Power for the tank = pressure of water × flow of water

Substituting the value,

power = 1 × 2 = 2 kW = P1

power = 10 × 15 = 150 kW = P2

Therefore,  a solution with a density of 1200 kg/m³ from a tank to a reservoir power for the first tank is 2kW  and for the second tank is 150 kW for the theoretical pumping power lifts.

Learn more about power, here:

brainly.com/question/24091709

#SPJ1

3 0
1 year ago
How to prepare R-SH from R-Cl? Show reaction.
Gnesinka [82]

Answer:

Alkylation reaction help in formation of thiol R-SH

<h2>Explanation:</h2>

Say lets take sodium hydrosulfide (NaSH) and alkyl chloride (R-Cl)/ any acid like chloroaceic acid or choloro or potassim acetates.

R-Cl + NaSH --> R-SH + NaCl

Such reactions are seen in the production of paper from wood pulp and in the production of organic compounds like thioglycolic acids (TGA)

5 0
3 years ago
Please someone help me to solve this problem​
Zinaida [17]

Answer:

(a) The final pressure of the sample becomes one-fourth of the original pressure.

(b) The pressure of the sample remains unchanged.

(c) The final pressure of the sample becomes four times of the original pressure.

Explanation:

(a)

P_{2}=\frac{P_{1}V_{1}T_{2}}{T_{1}V_{2}}

The volume of sample doubled and kelvin temperature halved.

V_{2}=2V_{1}

T_{2}=\frac{1}{2}T_{1}

P_{2}=\frac{P_{1}\times V_{1}\times \frac{1}{2}T_{1}}{T_{1}\times2V_{1}}=\frac{P_{1}}{4}

Therefore, the final pressure of the sample becomes one-fourth of the original pressure.

(b)

Volume and temperature of sample doubled.

V_{2}=2V_{1}

T_{2}=2T_{1}

P_{2}=\frac{P_{1}\times V_{1}\times 2T_{1}}{T_{1}\times2V_{1}}={P_{1}}

Therefore, the pressure of the sample unchanged.

(c)

Volume of sample halved and temperature double.

V_{2}=\frac{1}{2}V_{1}

T_{2}=2T_{1}

P_{2}=\frac{P_{1}\times V_{1}\times 2T_{1}}{T_{1}\times \frac{1}{2}V_{1}}={4P_{1}}

Therefore, the pressure of the sample becomes four times of the original pressure.

6 0
3 years ago
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