Concept explainers
(a)
Interpretation:
The two non-metals that can form more than four bonds in the periodic table has to be located. The formula of a compound justifying the answer has to be written.
Concept introduction:
Non-metals
They are good insulators of heat and electricity. They are mostly gases and sometimes liquid. Sometimes they are even solid at room temperature like, Carbon, sulfur and phosphorus.
(b)
Interpretation:
The two non-metals that form a maximum of four bonds in the periodic table has to be located. The formula of a compound justifying the answer has to be written.
Concept introduction:
Non-metals
They are good insulators of heat and electricity. They are mostly gases and sometimes liquid. Sometimes they are even solid at room temperature like, Carbon, sulfur and phosphorus.
(c)
Interpretation:
Two non-metals that form oxides that are gases at
Concept introduction:
Non-metals
They are good insulators of heat and electricity. They are mostly gases and sometimes liquid. Sometimes they are even solid at room temperature like, Carbon, sulfur and phosphorus.
(d)
Interpretation:
A non-metal that forms an oxide that is a solid at
Concept introduction:
Non-metals
They are good insulators of heat and electricity. They are mostly gases and sometimes liquid. Sometimes they are even solid at room temperature like, Carbon, sulfur and phosphorus.
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General Chemistry: Atoms First
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- The elements sodium, aluminum, and chlorine are in the same period. (a) Which has the greatest electronegativity? (b) Which of the atoms is smallest? (c) Which is the largest possible oxidation state for each of these elements? (d) Will the oxide of each element in the highest oxidation state (write its formula) be acidic, basic, or amphoteric?arrow_forwardWhich of the following statements are true?(a) Si can form an ion with six fluorine atoms, SiF62-,whereas carbon cannot.(b) Si can form three stable compounds containing two Siatoms each, Si2H2, Si2H4, and Si2H6.(c) In HNO3 and H3PO4 the central atoms, N and P, havedifferent oxidation states.(d) S is more electronegative than Se.arrow_forward(A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true but the second is false, and (D) if the first sentence is false but the second is true. 1. When a non-metallic oxide reacts with water, a base will be formed as the product of the reaction. When a metallic oxide like phosphorous pentoxide reacts with water, a base will be formed as the product of the reaction. 2. When water is mixed with oxides, hydrogen gas is evolved. A red to blue color change in the litmus paper indicates that the solution tested is an acid. 3. The filtrate in any filtration process is left on the surface of the filter paper, while the residue is collected at the bottom of the flask/container after passing through the filter paper. In the distillation process, the methyl violet served as a compound to acidify the water. 4. In the Winkler Titration Method, the starch solution turns colorless in the presence of free iodine in the solution to be titrated. In the Winkler…arrow_forward
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- Write a balanced equation for each of the following: (a) A characteristic reaction of Group 1A(1) elements: chunks of sodium react violently with water to form hydrogen gas and sodium hydroxide solution. (b) The destruction of marble statuary by acid rain: aqueous nitric acid reacts with calcium carbonate to form carbon dioxide, water, and aqueous calcium nitrate. (c) Halogen compounds exchanging bonding partners: phosphorus trifl uoride is prepared by the reaction of phosphorus trichloride and hydrogen fl uoride; hydrogen chloride is the other product. The reaction involves gases only.arrow_forward(a) Which poisonous gas is evolved when white phosphorus is heated with Cone. NaOH solution? Write the chemical equation. (b) Write the formula of first noble gas compound prepared by N. Bartlett. What inspired N. Bartlett to prepare this compound? (c) Fluorine is a stronger oxidising agent than chlorine. Why? (d)Write one use of chlorine gas.arrow_forwardSelect the member of group 4A that best fits each description:(a) forms chains to the greatest extent, (b) forms themost basic oxide, (c) is a metalloid that can form 2+ ions.arrow_forward
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