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Schach [20]
3 years ago
6

Which of these elements is unlikely to form covalent bonds? s, h, mg, ar, si?

Chemistry
2 answers:
Kitty [74]3 years ago
8 0

The element that is more likely to form a covalent bonds is silicon (si)

Silicon looks like brown powder in random form; it also looks like a silver-gray metallic-looking when it’s in crystalline form.

<h2>Further Explanation</h2>

Silicon is regarded as a semi-conductor, which implies that it possesses electronic conductivity between conductor and insulator while its conductivity rises with temperature. With all these properties, silicon is considered to be a very important element in electronics.

Silicon has four valence electrons which can form a covalent bonds by sharing its electrons. Also, when in its solid form, silicon doesn’t react with water or oxygen because it is an inert element.

However, a covalent bonds is also known as a molecular bond. It refers to a chemical link involving two atoms in which there is a sharing of electron between them. The electrons shared between the two atoms is called bonding pairs.

Some of the interaction involves covalent bonding include:

  • Metal to metal bonding
  • Bent bonds
  • Agnostic interaction

Covalent bonding can also be found in some chemical species, for example, macromolecules and radicals.

However, there are two types of covalent bonds and they include

  • Polar
  • Nonpolar

Therefore, the element that is most likely to form a covalent bonds is silicon (Si)

LEARN MORE:

  • The element sulfur (S) is most likely to form covalent bonds with the element  brainly.com/question/2177882
  • Which of these pairs of elements is most likely form covalent bonds?  brainly.com/question/3850422

KEYWORDS:

  • silicon
  • covalent bonds
  • polar
  • nonpolar
  • element
kari74 [83]3 years ago
4 0
<span>Answer: K because it is metal and typically forms ionic bonds. Ar is also unlikely to form any bonds because it has a full outer shell of electrons, but it can form covalent bonds.</span>
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Two solutions, initially at 24.60 °C, are mixed in a coffee cup calorimeter (Ccal = 15.5 J/°C). When a 100.0 mL volume of 0.100
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Answer:

ΔH = -59.6kJ/mol

Explanation:

The reaction that occurs between Ag⁺ and Cl⁻ ions is:

Ag⁺ + Cl⁻ → AgCl(s) + ΔH

To find ΔH we need to obtain moles of reaction and heat released in the reaction because ΔH is defined as heat released per mole of reaction.

<em>Moles of reaction:</em>

Moles of Ag⁺ and Cl⁻ added are:

Ag⁺: 0.100L * (0.100mol / L) = 0.01moles

Cl⁻: 0.100L * (0.200mol / L) 0 0.02 moles

That means limiting reactant is Ag⁺ and moles of reaction are 0.01 moles

<em>Heat released:</em>

To find heat released we must use coffe cup calorimeter equation:

Q = C*m*ΔT

<em>Where C is specific heat of solution (4.18J/g°C), m is the mass of solution (200g because there are 100 + 100mL = 200mL and density of solution is 1g/mL) and ΔT is change in temperature (25.30°C - 24.60°C = 0.70°C).</em>

Replacing:

Q = C*m*ΔT

Q = 4.18J/g°C * 200g * 0.70°C

Q = 585,2J

Is total heat released.

The calorimeter absorbs:

15.5J / °C * 0.7°C = 10.85

Thus, when 0.01 moles reacts, 585.2J + 10.85  = 596.05J are released (Heat released is heat abosrbed by calorimeter + Heat absorbed by water) and ΔH is:

ΔH = 596.05J / 0.01 moles =

ΔH = 59605J / mol =

<h3>ΔH = -59.6kJ/mol</h3>

<em>As heat is released, ΔH < 0.</em>

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