Most metals are not?
Answers
Most metals are not liquid at room temperature. They are typically solid and have a crystalline structure. Therefore, the correct option is option 3.
Metals are known for their high thermal and electrical conductivity, as well as their malleability and ductility. These properties allow metals to be shaped into various forms, such as wires and sheets, and conduct heat and electricity efficiently.
However, the majority of metals have a solid state at room temperature, with exceptions such as mercury, which is a liquid metal. The solid nature of metals is due to the metallic bonding between atoms, which involves the sharing of electrons within a sea of delocalized electrons.
Thus, the ideal selection is option 3.
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The complete question is -
Most metals are NOT-
Ductile
good conductors of heat and electricity,
liquid at room temperature,
malleable.
Related Questions
2.The image below shows two nitrogen atoms. For these two atoms to form a stable molecule, N2, how many electrons would have to be part of covalent bonds?
A 3.0 M HCl(aq) solution contains a total of(1) 3.0 grams of HCl per liter of water (2) 3.0 grams of HCl per mole of solution (3) 3.0 moles of HCl per liter of solution (4) 3.0 moles of HCl per mole of water
How do physical changes and chemical changes differ and how are they alike please at least 5 provide examples each for a brainliest!
Two most abundant elements in Earth's core are
B. phosphorous (P)
C. sulfur (S)
D. oxygen (O)
Answers
Answer: Phosphorous
Explanation: Nitrogen(N): 7:
Phosphorus(P): 15:
Oxygen(O): 8:
Sulphur(S): 16:
As nitrogen contains half filled configuration, it is stable and does not react. Phosphorous lies below nitrogen and reactivity decreases down a group for non metals as they tend to gain electrons as the valence shell move away from the nucleus.
Oxygen has 4 valence electrons, thus it need to gain two electrons to attain stable configuration. Thus is reactive.
Sulphur lies below oxygen and also need to gain two electrons. Reactivity decreases down a group for non metals as they tend to gain electrons as the valence shell move away from the nucleus.
How many moles of water are produced when 2 moles of NH4 react with excess Oxygen gas?
Answers
The moles of water are produced when 2 moles of NH4 react with excess Oxygen gas is 4 mole of H2O.
What is moles?
Moles are defined as a common unit used in science to measure vast numbers of extremely small things, such atoms, molecules, or other specific particles.
It can also be defined as a metric in chemistry that is used to describe a very high quantity of molecules, atoms, or particles.
Since we only have two moles of NH4, we switch out four for two.
2 NH4 + 3O2 --> 2NO + 4 H2O
As per the reaction, in order to produce 2 moles of NO2 and 4 moles of H2O, 2 moles of NH4 must react with 3 moles of oxygen gas.
Thus, the moles of water are produced when 2 moles of NH4 react with excess Oxygen gas is 4 mole of H2O.
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Now, on balancing the equation, we get 2 NH4 + 3O2 ---> 2NO + 4 H2O (law of conservation of mass)
thus, 2 moles of NH4 react with 3 moles of oxygen gas to produce 2 moles of NO2 and 4 moles of H2O.
Thus, we get 4 moles of H2O
Answers
Metal oxides M2O, peroxide M2O2, and superoxide MO are produced by alkali metals. Metal oxide is also referred to as basic oxide since basic hydroxide is the end result of interactions between metal oxide and water. As a result, their combination with acid produces salt and water in a manner similar to a regular acid-base reaction.
What is metal oxide ?
One of the most significant and well-characterized solid catalysts is metal oxide. Metal oxides are used in acid-base and redox processes and are regarded as heterogeneous catalysts.
Several metals are separated from their naturally occurring compounds like oxide and chloride using a breakdown reaction.
Metal oxides are crucial in various additional applications, such as energy production, conversion, and storage, as well as in environmental remediation and pollution monitoring.
Because they react with weak acids to produce salt and water, metallic oxides are basic in nature. They further react with water to create metal hydroxides, which are naturally alkaline due to the production of OH- ions in solution.
Thus, Metal oxides M2O, peroxide M2O2, and superoxide MO are produced by alkali metals.
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Answers
Answer:
b.
utilizing facts
Explanation:
Al.
P.
Cl.
Answers
Based on the trend, an electron will be most strongly attracted to Cl, chlorine. The correct option is D.
What is electronegativity?
Electronegativity is a property of an element which show the tendency of that element to accept electrons from other element. When an atom accept electrons, it gets a negative charge, the charge increase with the increase of accepting number of electrons.
Chlorine is a gas and is highly acidic. It has the highest electronegativity because it has the highest tendency to form a covalent bond with other element.
Chlorine has seven electrons in its outer shell, and it needs only one electron to complete its octave equal to the noble gas configuration.
Thus, the correct option is D. Cl.
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Answer:
Cl
Explanation:
The electronegativity follow the trend that the higher the element is the more electronegative he is, for exemplo, in F, Cl and Br are all from the same group, 17A, put F has the lowest atomic number, followed by Cl and Br is the last, because of that F is the more electronegative from them, followed for Cl and Br is the element with lowest electronegativity.
And this trend also says that the element that are on the right of the table will have the higher electronegativity, for exemplo F, K and Be, all of the will have electron on the second band of valence but F is for the group 17A, K is from the 1A and Be is form the 2A. Because of that F is, one again, the one with the highest electronegativity followed by Be and K is the one with the lowest electronegativity of them all.
Answers
Answer:
Explanation:
125 cm3 -> 0.125 L
M = no. mole / volume (L)
M = 0.25 / 0.125 = 2 M