RoseMarie Gallagher and Paul Ingram Solutions for Chapter: Atoms and Elements, Exercise 5: Q

One element has atoms with $13$ electrons.Write the electron distribution in this form: $2+$_____.

One element has atoms with $13$ electrons.

The electron distribution for boron is $2+3$. What is it for lithium?

The electron distribution for boron is $2+3$. What is it for magnesium?

The electron distribution for boron is $2+3$. What is it for hydrogen?

How many electron shells do atoms of period $3$ have?

The element krypton $\mathrm{Kr}$, is in group $0$, period $4$. Its proton number is $36$. Write the electronic configuration for krypton.

The element krypton $\mathrm{Kr}$, is in group $0$, period $4$. Its proton number is $36$. What can you say about the reactivity of krypton?