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yarga [219]
3 years ago
10

(a) Which elements are most likely to form ionic compounds? (b) Which metallic elements are most likely to form cations with dif

ferent charges?
Chemistry
1 answer:
elena-s [515]3 years ago
3 0

Answer:

A. Generally ionic compounds are formed metal and non metal elements since they forms opposite charged ions due to difference in their Electronegativity values.

NaCl, MgCl2, Ca(OH)2 etc are ionic compounds.

B. Generally transition elements (D elements) forms cations with different charges or simply they exist in different oxidation states due to availability of empty d orbitals.

Examples are Iron exsits as Fe+2 and Fe+3

Mn exists as Mn+2 , Mn+4, Mn+6 ,Mn+7 etc.

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The answer is A. Volcanoes and earthquakes often occur near place boundaries. Volcanoes are exit points for heat from the Earth's core. And Earthquakes are caused by the tectonic places colliding along another one. For example one tectonic plate would be slowly moving south, and another next to it could collide with the South-going plate while going North, and that is what causes Earthquakes.

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3 years ago
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Which describes any compound that has at least one element from group 17?
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The answer is HALIDE.
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3 years ago
Which of the following is NOT a unit energy? (select all that applies)
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Answer:

Kelvin, Celsius, Fahrenheit

Explanation:

See my other answer for an explanation.

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A small portion of a crystal lattice is sketched below. What is the name of the unit cell of this lattice? Your answer must be a
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This is an incomplete question, the given sketch is shown below.

Answer : The name of given unit cell is, FCC (face-centered cubic unit cell)

Explanation :

Unit cell : It is defined as the smallest 3-dimensional portion of a complete space lattice which when repeated over the and again in different directions produces the complete space lattice.

There are three types of unit cell.

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In SCC, the atoms are arranged at the corners.

Z=\frac{1}{8}\times 8=1

The number of atoms of unit cell = Z = 1

In BCC, the atoms are arranged at the corners and the body center.

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The given unit cell is, FCC because the atoms are arranged at the corners and the center of the 6 faces.

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