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vovangra [49]
3 years ago
10

Which elements forms an ion with a 1– charge?

Chemistry
1 answer:
Feliz [49]3 years ago
3 0

Answer:

F - Cl - Br - I - At - Ts

Explanation:

All the halogens, are the elements that forms a ion with a -1 charge.

The elements from group 17 in the Periodic Table are the one that has 7 electrons of valence. They need only 1 e⁻  to have the closest noble gas conformation so, they can comply with the octet rule.

This is an example:

Cl₂ (g) + 2e⁻  →  2Cl⁻

Chlorine which is a diatomic gas, gains 2 electrons to make 2 moles of chloride (in order to the balance the reaction)

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The tire pressure is the sum of gauge pressure and the standard pressure of atmospheric pressure

We know that the standard air pressure of surrounding = 101.325 kPa

The given gauge pressure = 413 kPascal

So the tire pressure =  101.325 kPa + 413 = 514.325 K Pa

We can also convert the given pascals to atmosphere or Torr or mmHg or bar

5 0
3 years ago
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A sample of radioactive waste has a half-live of 40 years and an activity level of 4 curies. After how many years will the activ
Westkost [7]

After 160 years, the activity level of the sample will be 0.5 curies.

<h3>What is half-life?</h3>

Half life of any radioactive waste is the half decay of that product.

The formula is \dfrac{\lambda }{\lambda_1} = 2^\dfrac{a}{b}

Where, λ is 4 cruies

λ1 is 0.5 cruies

b = 40 years

Putting the values in the equation

\dfrac{4}{0.5} = 2^\dfrac{a}{40}\\\\\\\dfrac{a}{40} =  4\\ = 160 years

Thus, the correct option is 160 years.

Learn more about half-life

brainly.com/question/24710827

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8 0
1 year ago
BRAINLIESTTT ASAP!! PLEASE HELP ME :)
Ratling [72]

Jot down the formula of the ionic compound. Let's say the ionic compound you're working with is NaCl.  

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Practice naming more simple ionic compounds.

7 0
2 years ago
Write a chemical equation for the dissolution of the AgCl precipitate upon the addition of NH,(aq).
Kobotan [32]

Explanation:

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The chemical reaction is given as:

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In a chemical reaction sodium and chlorine react to form sodium chloride. Which term names the sodium?
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Reactant is the answer
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