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4 years ago

Who first arranged the elements according to nuclear charge?

Chemistry

2 answers:

NARA [144]4 years ago

6 0

<span> dmitri Medeleev is the man</span>

vazorg [7]4 years ago

3 0

Dmitri Mendeleev
<span> Dmitri Mendeleev and Lothar Meyer individually came up with their own periodic law "when the elements are arranged in order of increasing atomic mass,
certain sets of properties recur periodically.</span>

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How many molecules in 11 grams of CO2?

yawa3891 [41]

Answer:

1095.62

Explanation:

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3 years ago

List the number of protons, neutrons, and electrons in....( there is a pic)

notsponge [240]

There are 6 protons, 7 neutrons, and 6 electrons since the atomic mass is rounded to 13.

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3 years ago

__________ is an important factor in the process of maturation because it provides a biological framework of how much one is cap

Anon25 [30]

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3 years ago

Read 2 more answers

2/10

emmainna [20.7K]

Answer:

pH=2.34

Explanation:

HBr -> H + Br

The dissociation it's complete, for that reason the concentration of the products is the same of HBr

[H+]=[Br-]=0.00234 M

pH= - log (0.00234)=2.34

6 0

3 years ago

For each of the following sublevels, give the n and l values and the number of orbitals: (a) 6g; (b) 4s; (c) 3d.

olya-2409 [2.1K]

Answer:

(a) 6g. Shell 6, n = 6. Subshell g, l = 4. Number of orbitals in sublevel = 9

(b) 4s. Shell 4, n = 4. Subshell s, l = 0. Number of orbitals in sublevel = 1

Explanation:

The rules for electron quantum numbers are:

1. Shell number, 1 ≤ n, n = 1, 2, 3...

2. Subshell number, 0 ≤ l ≤ n − 1, orbital s - 0, p - 1, d - 2, f - 3

3. Orbital energy shift, -l ≤ ml ≤ l

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

So,

(a) 6g. Shell 6, n = 6. Subshell g, l = 4. Number of orbitals in sublevel = 2l+1 = 9

(b) 4s. Shell 4, n = 4. Subshell s, l = 0. Number of orbitals in sublevel = 2l+1 = 1

4 0

3 years ago