Definition Definition Number of protons in the nucleus of an atom. It uniquely identifies an element, as the number of protons determines the element's properties. The periodic table of elements is arranged based on increasing atomic numbers, allowing scientists to easily locate and study elements.
Chapter 2, Problem 7MCP
(a)
Interpretation Introduction
Interpretation:
The element Magnesium is an alkali metal or an alkaline earth element has to be discussed.
(b)
Interpretation Introduction
Interpretation:
The element Magnesium is a cation former or anion former has to be discussed.
Concept Introduction:
Metals are elements that have the tendency of losing one or two electrons to gain a positive charge.
(c)
Interpretation Introduction
Interpretation:
Which sublevel is their outermost electron located in Magnesium has to be identified.
(d)
Interpretation Introduction
Interpretation:
The shorthand electronic configuration of Magnesium has to be written.
Concept Introduction:
Electron configuration means the distribution of electrons of an atom.
(e)
Interpretation Introduction
Interpretation:
Magnesium has higher or lower ionization energy than Calcium should be explained.
Concept Introduction:
Ionization energyis the minimum energy that is required to remove one electron from the valence shell of a gaseous atom.
Ionization energy increases moving from left to right across an element period.
(f)
Interpretation Introduction
Interpretation:
Magnesium has smaller or larger atom than Calcium should be explained.
(g)
Interpretation Introduction
Interpretation:
The formula of both the Magnesium and Calcium ions and reason for which one is larger has to be explained.
What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.160 mol of NaOH were added?
Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous solution. If neutral, simply write only NR. Be sure to include the proper phases for all species within the reaction. NaN₃