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2 years ago

Which of the following pairs of elements can combine to form an ionic compound?

Chemistry

1 answer:

Luda [366]2 years ago

8 0

Answer:

D.) magnesium and sulphur

Explanation:

Generally, ionic bonds form between a metal and a nonmetal.

Generally, covalent bonds form between two nonmetals.

Generally, metallic bonds form between two metals.

Nonmetals are located on the right side of the periodic table (apart from the noble gases in the final column). Hydrogen is also a nonmetal. Metals are every other element in the periodic table.

A.) Hydrogen (nonmetal) and carbon (nonmetal) = covalent

B.) Aluminum (metal) and magnesium (metal) = metallic

C.) Silicon (nonmetal) and chlorine (nonmetal) = covalent

D.) Magnesium (metal) and sulphur (nonmetal) = ionic

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NEED HELP PLEASE!!!!

Feliz [49]

I think the correct answer would be the third option. The reason I2 has a higher melting point than F2 is because I2 possesses a more polarizable electron cloud. I2 contains more electrons than F2 which would result to a stronger intermolecular forces. Having stronger intermoleculer forces would mean more energy is needed to break the bonds so a higher melting point would be observed.

4 0

3 years ago

How do I solve the following word problem: The half-life of Phosphorus - 32 is 14.3 days. It is used to study a plant's use of f

BaLLatris [955]

Half life is the time that it takes for half of the original value of some amount of a radioactive element to decay.

We have the following equation representing the half-life decay:

$A=A_o\times2^{(-\frac{t}{t_{half}})_{}_{}}$

A is the resulting amount after t time

Ao is the initial amount = 50 mg

t= Elapsed time

t half is the half-life of the substance = 14.3 days

We replace the know values into the equation to have an exponential decay function for a 50mg sample

$A=\text{ 50 }\times2^{\frac{-t}{14.3}}$

That would be the answer for a)

To know the P-32 remaining after 84 days we have to replace this value in the equation:

$\begin{gathered} A=\text{ 50 }\times2^{\frac{-84}{14.3}} \\ A=0.85\text{ mg} \end{gathered}$

So, after 84 days the P-32 remaining will be 0.85 mg

4 0

1 year ago

Pls hlp me with these questions: brainliest, ratting, thx, etc.

daser333 [38]

1 elements
2 they have same number of valence electrons
3 period

4 0

2 years ago

What are the n, l, and possible ml values for the 2p and 5f sublevels?

elixir [45]

Answer:

1. 2p sublevels, n = 2, orbital p, l = 1, ml = 0, ±1

2. 5f sublevels n = 5, orbital f, l = 3, ml = 0, ±1, ±2, ±3

Explanation:

The rules for electron quantum numbers are:

1. Shell number, 1 ≤ n

2. Subshell number, 0 ≤ l ≤ n − 1

3. Orbital energy shift, -l ≤ ml ≤ l

4. Spin, either -1/2 or +1/2

So,

1. 2p sublevels,

n = 2, orbital p, so l = 1, ml = 0, ±1

2. 5f sublevels

n = 5, orbital f, so l = 3, ml = 0, ±1, ±2, ±3

7 0

2 years ago

REY [17]

Answer:

Explanation:

this is easy its a

8 0

3 years ago