Question

1. how many electrons are present in the following elements? using the periodic table, determine the number of electrons for the elements listed below.

a. carbon —
b. chlorine —
c. indium —
d. calcium —
e. tungsten —
f. antimony —
g. titanium —
h. tin —

1. what is the atomic number?

a. copper —
b. xenon —
c. hydrogen —
d. aluminum —
e. barium —
f. iodine —
g. carbon —
h. phosphorous —
name: daryn ward
date: 01/13/22
period: 3b

Explanation:

Step1: Recall electron - atomic number relation

In a neutral atom, the number of electrons is equal to the atomic number. We can use the periodic table to find the atomic number of each element.

Step2: Find electrons for Carbon

Carbon (C) has an atomic number of 6. So, the number of electrons is 6.

Step3: Find electrons for Chlorine

Chlorine (Cl) has an atomic number of 17. So, the number of electrons is 17.

Step4: Find electrons for Tungsten

Tungsten (W) has an atomic number of 74. So, the number of electrons is 74.

Step5: Find electrons for Antimony

Antimony (Sb) has an atomic number of 51. So, the number of electrons is 51.

Step6: Find electrons for Titanium

Titanium (Ti) has an atomic number of 22. So, the number of electrons is 22.

Step7: Find electrons for Indium

Indium (In) has an atomic number of 49. So, the number of electrons is 49.

Step8: Find electrons for Tin

Tin (Sn) has an atomic number of 50. So, the number of electrons is 50.

Step9: Find electrons for Calcium

Calcium (Ca) has an atomic number of 20. So, the number of electrons is 20.

Step10: Find electrons for Copper

Copper (Cu) has an atomic number of 29. So, the number of electrons is 29.

Step11: Find electrons for Xenon

Xenon (Xe) has an atomic number of 54. So, the number of electrons is 54.

Step12: Find electrons for Hydrogen

Hydrogen (H) has an atomic number of 1. So, the number of electrons is 1.

Step13: Find electrons for Aluminum

Aluminum (Al) has an atomic number of 13. So, the number of electrons is 13.

Step14: Find electrons for Phosphorous

Phosphorus (P) has an atomic number of 15. So, the number of electrons is 15.

Step15: Find electrons for Barium

Barium (Ba) has an atomic number of 56. So, the number of electrons is 56.

Step16: Find electrons for Iodine

Iodine (I) has an atomic number of 53. So, the number of electrons is 53.

Answer:

Carbon: 6
Chlorine: 17
Tungsten: 74
Antimony: 51
Titanium: 22
Indium: 49
Tin: 50
Calcium: 20
Copper: 29
Xenon: 54
Hydrogen: 1
Aluminum: 13
Phosphorus: 15
Barium: 56
Iodine: 53