<span>C is the correct answer. Elements in the periodic table are grouped based on having similar properties. For example, the noble gases are all non-reactive and non-metallic. The electronic structure of an atom is the way the electrons are arranged within it, and this affects where they are located in the periodic table. The number of electrons in an element is the same as its group number in the periodic table (with the exception of Group 0).</span>
Answer:
a. magnesium
b. nitrogen
Explanation:
Barium and magnesium are both in 2nd group, so most similar compounds.
Nitrogen - 15 group, so it forms least similar to barium compound.
<u>Given information:</u>
A solution with a high H+ ion concentration
<u>To determine:</u>
The nature of pH of such a solution
<u>Explanation:</u>
pH is a measure of the H+ ion concentration in a given solution. Lower the pH higher will be the H+ concentration and the solution is termed acidic. In contrast, if the pH is higher the H+ concentration will be lower and the solution is basic.
Mathematically,
pH = -log[H+]
[H+] =
pH = 2; [H+] = 10⁻²M
pH = 7; [H+] = 10⁻⁷M
pH = 13; [H+] = 10⁻¹³M
pH = 14; [H+] = 10⁻¹⁴M
Ans: (a)
Thus, the highest concentration of H+ ions is for a solution of pH = 2
Candela is the correct answer. In measuring the brightness or luminosity of the bulb and you want to use the metric system, candela is the unit to be used. You are correct that candela is the unit of light intensity. The term candela is the Latin for candle which signifies light.<span> </span>
Answer: Science is an accurate measure of whats true, there are laws of science like physic, and mathematics and you can prove your answer by using science
Explanation: