An isotope will lose neutrons in order to become more stable.
The answer to this is false.
Answer:
True.
Explanation:
- As the concentration of [H⁺] of (1.0 x 10⁻⁴ M) is higher than that of (1.0 x 10⁻⁹ M), so the solution with [H⁺] of (1.0 x 10⁻⁴ M) is highly acidic.
- From the calculation point of view:
We can calculate the pH of the solution using the relation: pH = - log[H⁺].
pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution.
pH (0-7) is the acidic region and (7-14) is the basic region.
As the value of pH is lower means highly acidic solutions.
- <em>The pH of [H⁺] of (1.0 x 10⁻⁴):</em>
pH = - log[H⁺] = - log(1.0 x 10⁻⁴) = 4.0.
- <em>The pH of [H⁺] of (1.0 x 10⁻⁹):</em>
If we calculate pH directly, we will found that the pH of this acid is 9 and this is not accepted.
<em>Actually, it is very diluted acid that has a pH of 7.0 because there is another source of [H⁺] from water that has a concentration of (1.0 x 10⁻⁷).</em>
So, the concentration of [H⁺] is (1.01 x 10⁻⁷).
∴ pH = - log[H⁺] = - log(1.01 x 10⁻⁷) = 6.995.
It is clear that A solution with a hydrogen ion concentration [H+] of 1.0 x 10⁻⁴ M is more acidic than a solution with a [H+] of 1.0 x 10⁻⁹ M.
<em>So, this statement is true.</em>
Answer: metals, 88 , periodic table , luster , heat, electricity , thin, right, opposite , appearance , luster , malleable , ductile, opposite , shiny, moderately
Explanation:
Most of the elements in the periodic table are metals. Most of them are present on the left side of the periodic table. Elements to the far right of the periodic table are nonmetals. Elements which exhibit properties of both metals and nonmetals and are termed metalloids or semimetals.
Metals are defined as the elements which loose electrons to attain stable electronic configuration. They are hard ,malleable ( betaen to sheets) ,ductile ( drawn into wires) ,sonorous ( produce sound ) etc.
Non-metals are defined as the elements which gain electrons to attain stable electronic configuration. They are brittle and soft and are the poor conductors of heat and electricity.
Metalloids are defined as the elements which show properties of both metals and non-metals. Metalloids are typically semi-conductors, which means that they both insulate and conduct electricity.
Answer:
3.3
Explanation:
the heat is hit and the hot is cold.so thats why