Chapter 4, Problem 66A

How many protons and electrons are contained in an atom of element 44?

Interpretation Introduction

Interpretation:

The total number of protons and electrons present in an atom of element 44 is to be calculated.

Concept introduction:

In periodic table, elements are arranged in increasing order of atomic number.

Answer to Problem 66A

$\begin{array}{l}\text{Number of protons = 44}\hfill \\ \text{Number of electrons = 44}\hfill \end{array}$

Explanation of Solution

Element 44 means element with atomic number 44

Atomic number is also referred as number of protons

$\begin{array}{l}\text{Number of protons = Atomic number}\hfill \\ \text{Number of protons = 44}\hfill \end{array}$

All atoms are neutral

Therefore, Number of protons must be equal to number of electrons

$\begin{array}{l}\text{Number of protons = Number of electrons}\hfill \\ \text{Number of electrons = 44}\hfill \end{array}$

Conclusion

An element with atomic number 44 will also have 44 number of protons and electrons

$\text{Atomic number = Number of protons = Number of electrons = 44}$