Which of the following explain why nonmetals are typically harder and more brittle than metals?

2 answers:

6 0

Elements that tend to gain electrons to form anions during chemical reactions are called non-metals. These are electronegative elements with high ionization energies. They are non-lustrous, brittle and poor conductors of heat and electricity (except graphite).

otez555 [7]3 years ago

3 0

directional electrons in p orbitals

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At 350 k, kc = 0.142 for the reaction 2 brcl(g) ⇀↽ br2(g) + cl2(g) an equilibrium mixture at this temperature contains equal con

djyliett [7]

0.114 mol/l
The equilibrium equation will be:
Kc = ([Br2][Cl2])/[BrCl]^2
The square factor for BrCl is due to the 2 coefficient on that side of the equation.
Now solve for BrCl, substitute the known values and calculate.
Kc = ([Br2][Cl2])/[BrCl]^2
[BrCl]^2 * Kc = ([Br2][Cl2])
[BrCl]^2 = ([Br2][Cl2])/Kc
[BrCl] = sqrt(([Br2][Cl2])/Kc)
[BrCl] = sqrt(0.043 mol/l * 0.043 mol/l / 0.142)
[BrCl] = sqrt(0.001849 mol^2/l^2 / 0.142)
[BrCl] = sqrt(0.013021127 mol^2/l^2)
[BrCl] = 0.114110152 mol/l
Rounding to 3 significant figures gives 0.114 mol/l

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larisa86 [58]

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the position-time graph shows the motion of four people. label the lines on graph need on the motion description in this table.

sertanlavr [38]

Line 1: straight horizontal line
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sweet-ann [11.9K]

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Why do all atoms of an element have the same atomic number, although they may have

Evgesh-ka [11]

Answer:

Here’s what I get.

Explanation:

The atomic number is the number of protons in the nucleus of an atom.
The number of protons determines the number of electrons.
The number of electrons determines the chemical properties of the element,

Thus, the atomic number determines the identity of the element.

The atomic mass does not affect the chemical properties, so different isotopes of an element behave alike.

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