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Activity 1. L2: How many are we? Direction: Supply the missing information using the given atomic number and mass number for each element
1. How many protons, electrons, and neutrons does the Calcium atom have?

Name of element Calcium
Number of protons_______________ Atomic number 20
Number of neutrons_______________ Mass Number 40
Number of electrons ______________

2.How many protons, electrons, and neutrons are in the Phosphorus atom?

Name Phosphorus
Number of protons______________
Atomic number 15
Number of neutrons______________
Mass number 31
Number of electrons______________​

Sagot :

Answer:

1.calcium proton:20 neutron:20 electron:20

2.phosphorus protons:15 neutron:16 electron15