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crimeas [40]
3 years ago
13

Write the electron configuration for sodium

Chemistry
1 answer:
professor190 [17]3 years ago
8 0

Answer:

1s^2 2s^2 2p^6 3s^1

Explanation:

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N the molecule below, how many atoms could make hydrogen bonds with water? the compound has a ch2, double bond, chc, double bond
Anna35 [415]
<h3>Answer:</h3>

                10 Atoms

<h3>Explanation:</h3>

The structure of said compound is sketched according to guide lines provided in statement and is attached below.

Hydrogen Bond Interactions:

                     Hydrogen Bond Interactions are those interactions which are formed between a partial positive hydrogen atom bonded directly to most electronegative atom (i.e. F, O and N) of one molecule and the partial negative most electronegative atom of another molecule.

                      In given structure we are having seven most electronegative oxygen atoms (labelled red) and three partial positive hydrogen atoms (labelled blue) directly attached to most electronegative atom (i.e. oxygen atoms).

                      Therefore, the oxygen atoms will make hydrogen bonds with water's hydrogen atoms and the partial positive hydrogen atoms will make hydrogen bonds with water's oxygen atoms respectively.

3 0
4 years ago
The HF bond length is 92 pm, 16% shorter than the sum of the covalent radii of H (37 pm) and F (72 pm). Suggest a reason for thi
Elza [17]

Due to electronegativity difference between H and F atom.

<h3>What is the reason for the difference ?</h3>
  • The bond length of HF is 92 pm. It is 16% shorter than the sum of the covalent radii of H (37 pm) and F (72 pm).
  • The shorter of the bond length is due to the difference in electronegativity between H and F atom. The electronegativity of F is 4.0, whereas the electronegativity of H is 2.1.
  • Greater the difference of electronegativity between the bonded atoms, shorter will be the bond length.
  • As  becomes smaller i.e. as we proceed from HF to HI, this effect becomes lessens and bond length will be more predictable.

Thus from the above conclusion we can say the difference in electronegativity between H and F atom this is the reason for shorter bond length of HF.

Learn more about bond length here :

brainly.com/question/13683866

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3 0
1 year ago
The major part of a multicellular fungus is a twisted mass of hyphae that have grown together called a ?
Alekssandra [29.7K]
<span>The major part of a multicellular fungus is a twisted mass of hyphae that have grown together called a mycelium</span>
3 0
3 years ago
What would you do during a zombie apocalypse
Phantasy [73]

Answer:

C

Explanation:

because then you'd be able to make a group to raid, run with you, and save more people.

8 0
3 years ago
The half-life for the process 238u→206pb is 4.5×109 yr. a mineral sample contains 61.0 mg of 238u and 15.5 mg of 206pb. part a w
saul85 [17]

Answer : The age of the mineral is, 8.89\times 10^9\text{ years}

Explanation :

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{4.5\times 10^9\text{ years}}

k=1.54\times 10^{-10}\text{ years}^{-1}

Now we have to calculate the time.

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = time passed by the sample  = ?

a = initial amount of the reactant  = 61.0 mg

a - x = amount left after decay process = 15.5 mg

Now put all the given values in above equation, we get

t=\frac{2.303}{1.54\times 10^{-10}\text{ years}}\log \frac{61.0mg}{15.5mg}

t=8.89\times 10^9\text{ years}

Therefore, the age of the mineral is, 8.89\times 10^9\text{ years}

5 0
3 years ago
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