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3 years ago

13

If the 3d and 4s bands overlap in a metal atom, what is the maximum number of electrons for this composite band? express your an

swer numerically as an integer.

1 answer:

Roman55 [17]3 years ago

3 0

Hey there!

3d band can hold as many as 10 electrons, while 4s can bear as many as two electrons.

The maximum number of electrons for this composite band should be 12 electrons.

Hope that helps!

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Select the correct answer. Which of these elements is a transition metal?

PtichkaEL [24]

I don't see the options for an answer, so here is a list of all of the transition metals lol

8 0

2 years ago

When writing the chemical formulas for a molecular compound, what method do you use?

podryga [215]

Answer:

A molecular compound is usually composed of two or more nonmetal elements. Molecular compounds are named with the first element first and then the second element by using the stem of the element name plus the suffix -ide.

4 0

2 years ago

kotegsom [21]

Answer:

a mixture of molecules - Box f

atoms of a pure elementa metal - Box D

a solid compound - Box C

a mixture of elements - Box A

Explanation:

Box a has mixture of elements which forms a solid like shape but there are different elements present in the box. The box f has mixture of molecules in which many atoms are combined together. Box c has solid compound with single element.

5 0

3 years ago

At 25 ∘C the reaction CaCrO4(s)←→Ca2+(aq)+CrO2−4(aq) has an equilibrium constant Kc=7.1×10−4. What is the equilibrium concentrat

Nitella [24]

Answer:

2.67 × 10⁻²

Explanation:

Equation for the reaction is expressed as:

CaCrO₄(s) ⇄ Ca₂⁺(aq) + CrO₂⁻⁴(aq)

Given that:

Kc=7.1×10⁻⁴

Kc= $[Ca^{2+}][CrO^{2-}_4]$

Kc= [x][x]

Kc= [x²]

7.1×10⁻⁴ = [x²]

x = $\sqrt{7.1*10^{-4}}$

x = 0.0267

x = $2.67*10^{-2}$

6 0

3 years ago

Molar mass of c16h19n305s

Masja [62]

Answer:

365.212

Explanation:

According to the given situation, the calculation of molar mass is shown below:-

Data provided

$c_{16}\ h_{19}\ n_3\ o_5\ S$

Molar mass = 16 × 12 + 19 × 1.008 + 3 × 14 + 5 × 16 + 32.06

= 192 + 19.152 + 42 + 80 + 32.06

Molar mass = 365.212

Therefore for determining the molar mass we simply solve the above equation.

So, the correct answer is 365.212

5 0

3 years ago