Which element is malleable and a good conductor of electricity at STP?
2 answers:
is the element that is malleable and a good conductor of electricity at STP.
Further Explanation:
The representation of all the elements in their increasing atomic numbers is known as the periodic table. Such a representation is done in the form of a table having horizontal rows called periods and vertical columns called groups.
Malleability is the property of substance due to which it can be deformed by applying pressure. The malleable materials can be drawn into thin sheets by the process of rolling or hammering. Metals are malleable in nature because these have the tendency to get deformed under pressure.
Any substance that allows the flow of electric charges through it is said to be a conductor. Conductivity is defined as the property of any conductor to permit the flow of charges through it. Metals are good conductors of heat and electricity due to the presence of free electrons in them. Such electrons act as charge carriers.
Both malleability and conductivity are the properties of metals. Since silver exists as a metal at STP, it is malleable and a good conductor of electricity. But carbon, argon and iodine are non-metals at STP so these cannot exhibit any of the mentioned properties. Therefore option (4) is correct.
Learn more:
- Which property do metalloids share with nonmetals? brainly.com/question/802690
- Which properties are characteristic of group 2 elements? brainly.com/question/8226316
Answer details:
Grade: High School
Chapter: Periodic classification of elements
Subject: Chemistry
Keywords: element, silver, carbon, iodine, argon, conductor, periodic table, metal, non-metals, malleability, electricity, electrons, charge carriers.
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Answer:
2.25 M is the final concentration of hydroxide ions ions in the solution after the reaction has gone to completion.
Explanation:
Moles of NaOH =
Molarity of the nitric acid solution = 0.250 M
Volume of the nitric solution = 0.150 L
Moles of nitric acid = n
According to reaction, 1 mole of nitric acid recats with 1 mole of NaOH, then 0.0375 moles of nitric acid will react with :
of NaOH
Moles of NaOH left unreacted in the solution =
= 0.375 mol - 0.0375 mol = 0.3375 mol
1 mole of sodium hydroxide gives 1 mol of sodium ions and 1 mole of hydroxide ions.
Then 0.3375 moles of NaOH will give :
of hydroxide ion
The molarity of hydroxide ion in solution ;
2.25 M is the final concentration of hydroxide ions ions in the solution after the reaction has gone to completion.