Classify the following compounds as ionic or covalent: a. MgCl2 b. Na2S c. H2O d. H2S
2 answers:
Explanation:
A compound in which there occurs sharing of electrons from atom to another is known as a covalent compound.
For example, atomic number of hydrogen is 1 and atomic number of oxygen is 8.
As electronic distribution of oxygen atom is 2, 6. So, in order to complete its octet it will share its valence electrons with two hydrogen atoms.
Hence, it will form compound which is covalent in nature.
Whereas, a compound in which there occurs transfer of electrons from one atom to another is known as an ionic compound.
For example, atomic number of magnesium is 12 and atomic number of chlorine is 17. So, in order to attain stability Mg donates its valence electrons to chlorine atoms which will form an ionic compound .
Thus, we can conclude that out of the given options compounds are classified as follows.
- Ionic compound -
and
- Covalent compound -
and
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The number of molecules in 9.87 moles
is 59.43 molecules.
The moles of Fe in 1.40 x atoms of Fe is 0.23 x
The moles of in 2.30x
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is 3.81.
A mole is defined as 6.02214076 × of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
A. The number of C atoms in 0.524 mole of C:
6.02214076 × x 0.524 mole
3.155601758 atoms =3.155 atoms
B. The number of molecules in 9.87 moles of
:
6.02214076 × x 9.87
59.4385293 molecules= 59.43 molecules
C. The moles of Fe in 1.40 x atoms of Fe:
1.40 x ÷ 6.02214076 ×
0.2324754694 x moles.
0.23 x moles.
D. The moles of in 2.30x
molecules of
:
2.30x ÷ 6.02214076 ×
3.819239854 moles=3.81 moles
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