A student pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. She
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Answer:
The most important ore of aluminum is<u> Bauxite.</u>
And its chemical formula is .
Explanation:
Bauxite is the most important ore of Aluminium from which Aluminium is extracted. Bauxite is a rock and composed of Aluminium bearing mineral.
And its chemical formula is .
It contains Gibbsite, Bohmite and Diaspore along with iron.
It is a soft material with somewhat white to grey to reddish brown in colour.
It has an earthy lustre and low specific gravity.
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Answer:
(a) The Lewis structure is shown in the image below.
(b)
(c) Calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond.
(d) Calcium atom loses electrons.
Explanation:
Calcium is the element of second group and forth period. The electronic configuration of Calcium is - 2, 8, 8, 2 or
There are 2 valence electrons of Calcium.
Fluorine is the element of group 17 and second period. The electronic configuration of the element fluorine is - 2, 7 or
There is 1 valence electron of fluorine.
The Lewis structure is drawn in such a way that the octet of each atom is complete.
Thus, calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.
Thus, the formula of calcium chloride is .
<u>(a) The Lewis structure is shown in the image below.</u>
<u>(b) </u>
<u>(c) Calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond.</u>
<u>(d) Calcium atom loses electrons.</u>
