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3 years ago

I would like a list of random, interesting facts about Francium.

1 answer:

6 0

It has the highest equivalent weight of all elements.
Prior to its discovery, it was simply referred to as eka-caesium.
The most stable isotope, Fr-223, has the longest half-life at 21.8 minutes.
Francium has thirty-four known isotopes, with only two of them occurring in nature.
It is the most unstable of all elements that occur naturally.
Hope this helps.

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12.

siniylev [52]

Answer:

B. CH₄

Explanation:

The primary rule in deciding solubilities is, Like dissolves like. That is,

A polar solute dissolves in a polar solvent.
A nonpolar solute dissolves in a nonpolar solvent.

C₆H₁₄ is a nonpolar solvent. Its strongest intermolecular forces are London dispersion forces.

CH₄ is a nonpolar solute. It contains only nonpolar C-H bonds, and its strongest intermolecular forces are London dispersion forces.

Molecules of the two compounds can easily intermingle with each other because the attractive forces between them are so small.

A is wrong. H₂O is a highly polar substance. Its molecules are so strongly attracted to each other that they will not dissolve in the C₆H₁₄.

C and D are wrong. Both NaCl and SnS are compounds of a metal and a nonmetal. We would predict them to be ionic solids, at the extreme end of polarity. They will not dissolve in C₆H₁₄.

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4 years ago

Does anyone know the answer???

Dmitrij [34]

And Answer what answer would be 3.14

7 0

3 years ago

Read 2 more answers

Although the element hydrogen is a non-metal, it is located on the left side

marshall27 [118]

Answer:

Hydrogen's location is related to it's electron configuration not it's properties.

Even though hydrogen is gas it can be used as fuel in automobile because it is flammable

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3 years ago

Two descriptions about physical quantities are given below:

Airida [17]

Answer:

$\huge\boxed{\sf Option \ B}$

Explanation:

=> Weight is an attractive force which is exerted on any body.

=> It changes when the object's place changes as it depends upon the acceleration due to gravity ( g = 9.8 m/s ) which changes as we move from place to place.

$\rule[225]{225}{2}$

Hope this helped!

<h3>~AnonymousHelper1807</h3>

4 0

3 years ago

Please help I soon as possible it’s really important

Vlada [557]

Answer:

II. Rearrange the following jumbled words/phrases to make meaningful sentences: 5x1=5

a. certainly/the laughter/is/medicine/best

b. laughter/fact/is/in/a/panacea/for/diseases/all

c. lowers/pressure/by/circulation/it/blood/increasing/blood

d. a sense/and promotes/of/stress/well-being/laughter/decreases.

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3 years ago