All categories

4 years ago

Why are atoms of lithium, sodium, and potassium almost neverfound alone in nature

Chemistry

2 answers:

yuradex [85]4 years ago

6 0

The Alkali elements are so reactive that they are never found alone in nature

Crazy boy [7]4 years ago

4 0

These three metals- called the alkali metals- have one electron in their outer shell. Since all atoms want to be stable, it try's to lose this electron. They are very reactive, and so will be found in compounds or mixtures, such as sodium chloride (table salt!)

Hope this helps:)

You might be interested in

Please Help , Thank You

ivanzaharov [21]

I think it enters a new material

8 0

3 years ago

A 2.0 molal sugar solution has approximately the same freezing point as 1.0 molal solution of 1) CaCl2 2) CH3COOH 3) NaCl 4) C2H

sertanlavr [38]

Answer:

3) NaCl.

Explanation:

∵ ΔTf = iKf.m

where, i is the van 't Hoff factor.

Kf is the molal depression freezing constant.

m is the molality of the solute.

The van 't Hoff factor is the ratio between the actual concentration of particles produced when the substance is dissolved and the concentration of a substance as calculated from its mass.

For most non-electrolytes dissolved in water, the van 't Hoff factor is essentially 1.

So, for sugar: i = 1.

∴ ΔTf for sugar = iKf.m = (1)(Kf)(2.0 m) = 2 Kf.

For most ionic compounds dissolved in water, the van 't Hoff factor is equal to the number of discrete ions in a formula unit of the substance.

For NaCl, it is electrolyte compound which dissociates to Na⁺ and Cl⁻.

So, i for NaCl = 2.

∴ ΔTf for NaCl = iKf.m = (2)(Kf)(1.0 m) = 2 Kf.

So, the right choice is: 3) NaCl.

8 0

3 years ago

The mixing of which pair of reactants will result in a precipitation reaction? A. Ba(NO3)2(aq) + Na2CO3(aq) B. NH4Br(aq) + NH4I(

Semenov [28]

Answer:

A. Ba(NO₃)₂(aq) + Na₂CO₃(aq)

Explanation:

The reaction between aqueous Ba(NO₃)₂ and Na₂CO₃ is a precipitation reaction.

The complete equation for the reaction is;

Ba(NO₃)₂(aq) + Na₂CO₃(aq) → BaCO₃(s) + NaNO₃(aq)

Barium carbonate is the precipitate formed during the reaction.
All nitrates are soluble in water and all salts of sodium are soluble in water, therefore, Ba(NO₃)₂, Na₂CO3, and NaNO₃ are soluble in water.
Precipitation reaction involves reaction of soluble salts to form a precipitate as one of the product.

8 0

3 years ago

Neutral atoms of the same element can differ in their number of

konstantin123 [22]

Answer:

a. neutron

Explanation:

A neutral atom has the same number of protons and electrons because in order for it to be a neutral atom the charges must be the same.

a neutron has no charge therefore it can be different then the number of protons and electrons in a neutral atom as it won't affect the charge.

7 0

2 years ago

it is often thought that two mutations must happen in a cell to create a cancerous cell. What two cell functions could mutate an

grigory [225]

Answer:

Tumor Suppressor genes,

and proto oncogenes.

Explanation:

can mutate and lead to a cancerous cell.

7 0

2 years ago