Q. 4.101 - An Introduction to General, Organic, and Biological Chemistry

Question

Complete the following table: $(4.4,4.5)$

Step-by-Step Solution

Answer

Name	Atomic Symbol	Number of Protons	Number of Neutrons	Number of Electrons
Selenium	$\begin{array}{c}34\\ 16\end{array}Se$	16	18	16
Nikal	$\begin{array}{c}62\\ 28\end{array}Ni$	28	34	28
Magnesium	$\begin{array}{c}26\\ 12\end{array}Mg$	12	14	12
Radium	$\begin{array}{c}288\\ 28\end{array}Ra$	88	140	88

Step 1: Given Information

We need to complete the table.

Step 2: Simplify

Selenium-$\begin{array}{c}34\\ 16\end{array}Se$ 

number of protons- $16$

number of neutrons- $34-16=18$

number of electrons-  $16$

Nikal- $\begin{array}{c}62\\ 28\end{array}Ni$ 

number of protons- $28$ 

number of neutrons- $34$

number of electrons- $28$

Magnesium $\begin{array}{c}26\\ 12\end{array}Mg$ 

number of protons-  $12$

number of neutrons-  $14$

number of electrons-  $12$

Radium $\begin{array}{c}288\\ 28\end{array}Ra$

number of protons-  $88$

number of neutrons-  $228-88=140$

number of electrons-  $88$