All categories

4 years ago

Which shows the electron configuration for zinc (Zn)?

Chemistry

2 answers:

nlexa [21]4 years ago

7 0

Answer:

the answer is D

Explanation:

just to make it easy and simple for others that didnt understand the answer above me :D

xeze [42]4 years ago

3 0

Answer. The electronic configuration of the zinc will be

$[Ar]4s^{2}3d^{10}$

Explanation:

Zinc belongs to 3d series of transition metal of the periodic table. Its atomic number is 30 which means it contains 30 electrons.

The nearest noble gas which lies close to zinc is argon (atomic no = number of electrons = 18) and thus the electronic configuration can be represented as:

$[Zn]=[Ar]4s^{2}3d^{10}$

You might be interested in

Can someone answer these two separate questions pls ill give brainliest

Tems11 [23]

The average speed

3. 89.7 m/min

4. 6.13 ft/min

<h3>Further explanation</h3>

Given

3. 1076 m in 12 min

4. 92 ft in 15 min

Required

average speed

Solution

I am solving for : the average speed

The equation I need is :

$\tt avg~speed=\dfrac{total~distance}{total~time}$

This is how I set the equation

$\tt avg~speed=\dfrac{1076~m}{12~min}$

This is my answer = 89.7 m/min

I am solving for : the average speed

The equation I need is :

$\tt avg~speed=\dfrac{total~distance}{total~time}$

This is how I set the equation

$\tt avg~speed=\dfrac{92~ft}{15~min}$

This is my answer = 6.13 ft/min

8 0

3 years ago

Plz answer these questions :

SSSSS [86.1K]

Answer: 2) see below

3) 2AgCl → 2Ag + Cl₂

Explanation:

Step 1: Crushing & Grinding CuFeS₂(s)→ CuFeS₂(s)

Step 2: Froth Flotation CuFeS₂(s)----> CuFeS₂ (l)

Step 3: Roasting 2CuFeS₂(l) + 3O₂(g) → 2FeO(s) + 2CuS(s) + 2SO₂(g)

Step 4: Converting matte to blister Cu₂S(l) + O₂(g) → 2Cu(l) + SO₂(g)

Step 5: Anode Casting Cu(l) → Cu(s)

Step 6: Electrolytic Refining Cu(s) → Cu(s)

Anode: Cu(s) → Cu₂ + (aq) + 2e-

Cathode: Cu2 + (aq) + 2e- → Cu(s)

see diagram below for illustration of steps

3) When silver chloride (solid) is exposed to sunlight, it decomposes into silver (solid) and chlorine (gas).

The equation is written as: $2AgCl_{(s)}\xrightarrow{\text{sunlight}}}2Ag_{(s)}+Cl_{2(g)}$

3 0

4 years ago

The graph shows the distribution of energy in the particles of two gas samples at different temperatures, T1 and T2. A, B, and C

coldgirl [10]

Answer:

The average speed of gas particles at T₂ is lower than the average speed of gas particles at T₁.

Explanation:

Particles A and C are shown as if they are on the same vertical line, which means with the same kinetic energy. Both particle A and C are to the lett of particle B, which means that the formers have a lower kinetic energy than the latter.

Since the likelyhood of a particle to participate in the reaction increases with the kinetic energy, particle B is more likely to participate in the reaction than particles A and C. Hence, the first choice is incorrect.

The graph, although not perfectly symmetrical, does show a bell shape, hence there are many particles will low kinetic energy and many particles with high kinetic energy. You cannot assert that most of the particles of the two gases have high high speeds. Hence, second statement is incorrect, too.

At high values of kinetic energy (toward the right of the curve), the line labeled T₁ is higher than the line labeled T₂, meaning that at T₁ more particles have an elevated kinetic energy than the number of particles that have an elevated kinetic energy at T₂.

On the other hand, at low values of kinetic energy (toward the left of the curve) the line T₂ is higher than the line T₁, meaning that at T₂ more particles have a low kinetic energy than the number of particles that have low kinetic energy at T₁.

Hence, the last two paragraphs are telling that the average kinetic energy of gas particles at T₂ is is lower than the average kinetic energy of gas particles at T₁.

Since the average speed is proportional the the square root of the temperature, the same trend for the average kinetic energy is true for the average speed, and you conclude that the last statement is true: "The average speed of gas particles at T₂ is lower than the average speed of gas particles at T₁".

Since more particles at T₁ have high kinetic energy than the number of particles at T₂ that have a high kinetic energy, more particles of gas at T₁ are likely to participate in the reaction than the gas at T₂, and the third statement is incorrect.

7 0

3 years ago

If each water molecule contains 2 hydrogen atoms, how many total oxygen atoms in 20 water molecules?

Paul [167]

The answer is 10 because if their is 20 molecules of hydrogen then their is one oxygen molecule for each which results in 20 divided by two which equals 10

7 0

3 years ago

Sketch a heating curve graph of temperature The b.p. of methanol is 65°C and that of

Reptile [31]

Answer:

its 70*

Explanation:

8 0

3 years ago

Read 2 more answers