Question

1. how many protons and neutrons are present is an atom of krypton (mass # = 84)? protons = ____ neutrons = __ 3. how many protons and neutrons are present is an atom of tin (mass # = 119)? protons = __ neutrons = __ 4. how many protons and neutrons are present is an atom of tungsten(mass # = 184)? protons = __ neutrons = __ 5. how many protons and neutrons are present is an atom of titanium (mass # = 48)? protons = __ neutrons = ____

Explanation:

Step1: Recall atomic - number concept

The number of protons in an atom is equal to its atomic number. We can look up the atomic numbers of the elements in the periodic table.

Step2: Calculate neutrons

The number of neutrons is calculated by subtracting the number of protons (atomic number) from the mass - number.

For krypton (Kr):

The atomic number of krypton is 36.
Protons = 36
Mass - number = 84
Neutrons = 84 - 36=48

For tin (Sn):

The atomic number of tin is 50.
Protons = 50
Mass - number = 119
Neutrons = 119 - 50 = 69

For tungsten (W):

The atomic number of tungsten is 74.
Protons = 74
Mass - number = 184
Neutrons = 184 - 74=110

For titanium (Ti):

The atomic number of titanium is 22.
Protons = 22
Mass - number = 48
Neutrons = 48 - 22 = 26

Answer:

1. Protons = 36, Neutrons = 48
2. Protons = 50, Neutrons = 69
3. Protons = 74, Neutrons = 110
4. Protons = 22, Neutrons = 26