An unknown solution has an H+ concentration of 10-12 moles per liter. Which of the following statements correctly describes this
2 answers:
Answer:
The pH of the solution 12 which means that solution is basic in nature.
Explanation:
The pH of the solution is defined as negative logarithm of hydrogen ions concentration in a solution. Mathematically written as:
Given concentration of hydrogen ions=
- Solution with pH less than 7 are considered as acidic as solutions.
- Solution with pH more than 7 are considered as basic as solutions.
The pH of the solution 12 which means that solution is basic in nature.
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Answer is: beryllium-10.
The diagram shows that atom has 4 protons, 5 neutrons and 2 valence electrons.
Atomic number is the number of protons, which is characteristic of a chemical element, beryllium (Be) is an element with atomic number 4.
Two valence electrons means that atom is from 2. group of periodic table, only beryllium is from that group; sodium (1. group), boron (13. group) and carbon (14. group).
Beryllium-10 has 6 neutrons, so it is isotope (different number of neutrons or mass number).
