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4 years ago

Describe the shapes and relative energies of the SPD & f atomic orbitals

Chemistry

1 answer:

Deffense [45]4 years ago

6 0

Explanation:

The shapes and relative energies of the orbitals s,p,d and f orbitals are given by the principal quantum number and the azimuthal quantum number.

The principal quantum number gives the main energy level and the azimuthal quantum number denotes the shape of the orbitals.

For the principal quantum number, they represent the energy levels in which the orbital is located or the average distance of the orbital from the nucleus. It takes the number n = 1,2,3,4,5,6,7......
The azimuthal quantum number(L) shows the shape of the orbitals in subshells accommodating electrons. The number of possible shapes is limited by the the principal quantum number.

L Name of orbital shape of orbital

0 s spherical

1 p dumb-bell

2 d double dumb-bell

3 f complex

Principal Azimuthal Orbital

Quantum Quantum Designation of

Number (N) Number(l) Sublevel

1 0 1s

2 0 2s

1 2p

3 0 3s

1 3p

2 3d

4 0 4s

1 4p

2 4d

3 4f

Learn more:

Atomic orbitals brainly.com/question/9514863

#learnwithBrainly

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Aspirin is a weak organic acid whose molecular formula is HC9H7O4. An aqueous solution of aspirin is prepared by dissolving 3.60

garri49 [273]

Answer:

Ka = 3.50x10⁻⁴

Explanation:

First, we need to convert the unit of 3.60 g/L to mol/L:

$C_{C_{9}H_{8}O_{4}} = 3.60 \frac{g}{L}*\frac{1 mol}{180.16 g} = 0.0200 mol/L$

The reaction dissociation of aspirin in water is:

C₉H₈O₄ + H₂O ⇄ C₉H₇O₄⁻ + H₃O⁺

0.02 - x x x

The constant of the above reaction is:

$Ka = \frac{[C_{9}H_{7}O_{4}^{-}][H_{3}O^{+}]}{[C_{9}H_{8}O_{4}]}$

$Ka = \frac{x^{2}}{0.02 - x}$

To find Ka we need to find the value of x. We know that pH = 2.6 so:

$pH = -log[H_{3}O^{+}]$

$2.6 = -log(x)$

$x = 2.51 \cdot 10^{-3} M = [H_{3}O^{+}] = [C_{9}H_{7}O_{4}^{-}]$

Now, the concentration of C₉H₈O₄ is:

$C_{C_{9}H_{8}O_{4}} = 0.02 - 2.51 \cdot 10^{-3} = 0.018 M$

Finally, Ka is:

$Ka = \frac{[C_{9}H_{7}O_{4}^{-}][H_{3}O^{+}]}{[C_{9}H_{8}O_{4}]} = \frac{(2.51 \cdot 10^{-3})^{2}}{0.018} = 3.50 \cdot 10^{-4}$

Therefore, the Ka of aspirin is 3.50x10⁻⁴.

I hope it helps you!

3 0

3 years ago

What is the atomic number (Z) of an atom containing 30 neutrons and having A= 70?

Romashka-Z-Leto [24]

A= mass number = number of protons and neutrons in the nucleus

Z= number of electrons = number of protons
Given, number of neutrons= 30

Z = A - 30 = 70 - 30 = 40

Z = 40

I hope I was helpful

7 0

3 years ago

Read 2 more answers

Determine the specific heat of a material if a 35-9 sample absorbed 96 ) as it was heated from 293 Kto 313 K.

Norma-Jean [14]

This is an incomplete question, here is a complete question.

Determine the specific heat of a material if a 35 g sample absorbed 96 J as it was heated from 293 K to 313 K.

Answer : The specific heat of a material is, 0.137 J/g.K

Explanation :

Formula used to calculate the specific heat of a material is:

$q=m\times c\times (T_2-T_1)$