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3 years ago

Most transition metals lose one electron to form a +1 cation. True or False?

Chemistry

2 answers:

Rzqust [24]3 years ago

4 0

False - most common oxidation state for transition metals is +2

lana66690 [7]3 years ago

3 0

It would true because it would be going to that other element that they would be combining with

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The solid anhydrous solid CoCl2 is blue in color. Because it readily absorbs water from the air, it is used as a humidity indica

MrRissso [65]

Answer:

$CoCl_{2}.(H_{2}O)_{6}$ is formed and it has three unpaired electrons.

Explanation:

Blue $CoCl_{2}$ reacts with water to produce pink colored $CoCl_{2}.(H_{2}O)_{6}$ complex.

In this complex, $Co^{2+}$ ion forms an octahedral complex with six $H_{2}O$ ligands.

As $H_{2}O$ is a weak field ligand therefore $Co^{2+}$ ion remains in low spin state.

Hence electronic configuration of $Co^{2+}$ ion in this octahedral geometry is $t_{2g}^{5}e_{g}^{2}$ with total three unpaired electrons.

6 0

3 years ago

If a hydrogen atom has its electron in the n = 3 state, how much energy in ev is needed to ionize it?

tensa zangetsu [6.8K]

The energy of the hydrogen atom will be -0.85 ev.

Ionization, also known as ionization, would be the phenomenon by which an atom or molecule gains or loses electrons to acquire a negative and positive charge, frequently in conjunction with those other chemical changes. Ions are the name for the electrically charged molecular or atom that results.

These chemicals are known as ionic compounds, with table salt serving as an example. Ionization would be the process of removing electrons from such an element as well as a molecule as well as the dissociation of an ionic material, such as salt, itself into the individual ions in a solution like water.

The energy of hydrogen atom will be calculated by using the formula:

$E_{n} = -13.6 ev / n^{2}$

where, $E_{n}$ = energy of nth level, n is the state.

It is given that, n = 3 .

Now put the value of n in above equation.

$E_{4} = -13.6 ev / 4^{2}\\E_{4} = -13.6 ev / 16\\E_{4} = -0.85 ev$

Therefore, the energy of the hydrogen atom will be -0.85 ev.

To know more about energy

brainly.com/question/1932868

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4 0

1 year ago

A solution of h2so4(aq) with a molal concentration of 2.24 m has a density of 1.135 g/ml. what is the molar concentration of thi

OLga [1]

This problem is simply converting the concentration from molality to molarity. Molality has units of mol solute/kg solvent, while molarity has units of mol solute/L solution.

2.24 mol H2SO4/kg H2O * (0.25806 kg H2SO4/mol H2SO4) = 0.578 kg H2SO4/kg H2O

That means the solution weighs a total of 1 kg + 0.578 kg = 1.578 kg. Then, convert it to liters using the density data:

1.578 kg * (1000g / 1kg) * (1 mL/1.135 g) = 1390 mL or 1.39 L.

Hence, the molarity is

2.24/1.39 = 1.61 M

7 0

3 years ago

How to make non-sticky slime without borax / plz help will mark as brainliest

ddd [48]

In a bowl, combine 1/4 cup of while glue and 1 tablespoon of liquid laundry detergent. Stir to combine, then wait a few minutes for it to turn gooey. If you want to make colored slime, stir in a few drops of food coloring into the glue before you add the detergent.

7 0

3 years ago

Read 2 more answers

3. How can a community help implement Ecological Solid Waste Management.

Setler79 [48]

Answer:

It help cause we compost food scraps and other organic wastes. We also reuse and recycle materials to organize for government and industry to develop community recycling materials.

It depend on your opinion as a student.

Explanation:

Hope it helps

4 0

2 years ago