Answer:
nicotine and tobacco can cause lung cancer because the chemicals and tar can get stuck in your lungs. This blocks an airway, to your throat which allows you to breathe. When that airway is blocked, it becomes hard to breathe....
Explanation:
KMnO4 has the incorrect set of oxidation numbers. Whenever there is an alkali metal, it has an oxidation number of +1. As you can see, K is said to have an oxidation number of +2, so it is incorrect.
The name of the compound formed from Aluminium and chlorine is Aluminium Chloride and the formula is AlCl₃.
- Aluminium chloride is also sometimes referred to as aluminium trichloride or aluminium (III) chloride.
- Aluminium chloride is an ionic compound made up of aluminium ions and chloride ions. Aluminium Ion has a valency of +3 whereas chloride Ion has a valency of −1.
What is Valency?
- The combining capacity of an atom is known as its valency.
- The valency of an atom is equal to the number of electrons in the outer shell if that number is four or less. Otherwise, the valency is equal to eight minus the number of electrons in the outer shell
- So, in writing the formula, there is a cross of the two valencies because three chlorine atoms will have to react with one aluminium atom to gain one electron each.
Al³⁺ + 3Cl⁻¹ → AlCl₃
Thus we can conclude that when aluminium and chlorine combine , we get AlCl₃ which is called aluminium chloride
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Answer:
c. differ in electronegativity
Explanation:
Covalent bond:
It is formed by the sharing of electron pair between bonded atoms.
The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.
For example:
In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive
. The bond is polar.
When the elctronegativity difference is 0.4 or less than 0.4 the bond is non polar.
if the electronegativity difference is greater than 0.4 the bond is polar.
Answer:
1. How many atoms are in 6.5 moles of zinc? 6.5 moles. 6.02 x 10. 23 atoms = atoms. 3. Convert 2.35 moles of carbon to atoms. 2.35 moles 6.02 x 10. 23.