Which metallic element may be considered as the periodic table's "cruel joke", and why?

1 answer:

3 0

<span>Beryllium This is because it is in a group where Alkaline earth metals are but does not exhibit true properties of elements in that group as It exhibits amphoteric properties showing both the properties of a base and that of an acid.</span>

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Can someone match the following ????

Arte-miy333 [17]

I believe it the answer is 3412

4 0

3 years ago

Suggest an explanation for the observations that ethanol, C2H5OH, is completely miscible with water and that ethanethiol, C2H5SH

JulijaS [17]

Explanation:

Ethanethiol is an organosulphur compound which had an alkyl group(CnH2n+1) and a -thiol group (-SH). A thiol group like an hydroxyl group has its Oxygen replaced with sulphur.

Ethanethiol shows little association of its -SH group with the water molecules by hydrogen bonding; both with water molecules and among themselves. Hence why they are less soluble in water or slightly soluble in water.

Ethanol is an organic compound which the general formula of CnH2n+1OH. Ethanol is soluble in water because of the reaction of the -OH group with the water molecules to form hydrogen bonds.

Note that as the alkyl chain increases, Solubility decreases. This is because the alkyl chain forms the hydrophobic surface of the molecule due to its non-interaction of the water molecules to form hydrogen bond.

4 0

3 years ago

Decide whether a chemical reaction happens in either of the following situations. If a reaction does happen, write the chemical

Natalija [7]

Answer :

Part 1 : Yes, this reaction will take place.

Part 2 : No, this reaction will not take place.

Explanation:

Single replacement reaction : A chemical reaction in which the more reactive element replace the less reactive element.

It is represented as,

$A+BC\rightarrow AC+B$

In this reaction, A is more reactive element and B is less reactive element.

Reactivity series : It is used to determine the products of the single displacement reactions. As we know that in a single displacement reaction, the most reactive metal displaces the least reactive metal.

Part A :

This reaction will takes place because iron metal is more reactive metal than copper metal. So, iron metal can displaces copper metal from its solution.

The chemical reaction will be:

$Fe(s)+Cu(NO_3)_2(aq)\rightarrow Fe(NO_3)_2(aq)+Cu(s)$

Part B :

This reaction will not takes place because copper metal is less reactive metal than iron metal. So, copper metal can displaces iron metal from its solution.

The chemical reaction will be:

$Fe(s)+Cu(NO_3)_2(aq)\rightarrow \text{No reaction}$