What is the size of a sodium atom

Chemistry

2 answers:

aalyn [17]4 years ago

8 0

The answer of your question is 227 pm,it may help you

Mariana [72]4 years ago

4 0

A sodium atom contains 11 electrons and 11 protons. When the atom bonds, say to chlorine for instance, NaCl, the sodium atom will give up an electron to the chlorine. When an atom loses an electron, it becomes a positively charged ion, Na+ in this example. The chlorine gains an electron and becomes negatively charged, Cl-.

Hope that helps!

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Calculate the new boiling point of a solution if 10.00 g of a non-ionizing compound (C3H5(OH)3) is dissolved in 90.00 g of H2O.

erma4kov [3.2K]

Answer:

Boiling T° of solution = 100.6

Explanation:

Formula for elevation of boiling point is:

ΔT = Kb . m . i

where ΔT means Boiling T° of solution - Boiling T° of pure solvent

Our solute is a non ionizing compound.

i = 1, because it is a non ionizing compound. i, indicates the ions dissolved in solution.

m = molality (moles of solute dissolved in 1 kg of solvent)

90 g of solvent = 0.09 kg of solvent

We convert mass of solute to moles (by the molar mass):

10 g . 1 mol /92.09 g = 0.108 moles

m = 0.108 mol /0.09 kg = 1.21 m

Let's replace data: Boiling T° of solution - 100°C = 0.51 °C/m . 1.21 m . 1

Boiling T° of solution = 0.51 °C/m . 1.21 m . 1 + 100°C

Boiling T° of solution = 100.6

5 0

3 years ago

If a substance undergoes electrolysis and a brown solid forms on one electrode and a gas on the other, from this we can conclude

andrew-mc [135]

Answer:

b. a compound.

Explanation:

Electrolysis is described as a mechanism in which ionic compounds are decomposed into their elements by transmitting a direct electric current via the compound in a liquid state. At the cathode, the cations are reduced and anions at the anode are oxidized. There is an exchange between ions and atoms in the electrolysis process caused by the addition or removal between electrons from the external circuit. As per the question, the original substance is a compound because the electrolysis method is used to obtain pure elements from their respective compound.

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B because once the circuit is burned the lights will all go of

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