Question

which of the following statements about non - metals is correct?
a) non - metals tend to have low ionization energy and low electronegativity.
b) non - metals tend to have high ionization energy and low electronegativity.
c) non - metals tend to have high ionization energy and high electronegativity.
d) non - metals tend to have low ionization energy and high electronegativity.
question 9 (5 points)
listen
whats the electron configuration of a ca^{+2} ion?
a) kr
b) ne
c) ar

Explanation:

• For the non - metals question: Non - metals have a tendency to gain electrons. High ionization energy means it is difficult to remove an electron (which is true as they want to gain, not lose), and high electronegativity (a measure of the ability to attract electrons) is also a characteristic of non - metals.
• For the \(Ca^{+2}\) electron - configuration question: Calcium (\(Ca\)) has an atomic number of 20. The electron configuration of \(Ca\) is \([Ar]4s^{2}\). When it forms \(Ca^{+2}\), it loses 2 electrons from the \(4s\) orbital. So the electron configuration of \(Ca^{+2}\) is \([Ar]\).

Answer:

• For the non - metals question: C. Non - metals tend to have high ionization energy and high electronegativity.
• For the \(Ca^{+2}\) electron - configuration question: C. \([Ar]\)