Question

complete the following table:

name	symbol	atomic number	mass number	number of neutrons	number of electrons	charge
hydrogen - 2	$^{2}h$	1	2	1	1	0
tritium	$^{3}h$	1	3	2	1	0
sodium - 22	$^{22}na^{+}$	11	22	11	10	1
magnesium - 24		12	24	12	12	0
magnesium - 25		12	25	13	12	0
	$^{46}ti^{2 - }$
	$^{107}ag$
	$^{19}f^{-1}$
carbon - 12					6	0
carbon - 13					6	0
carbon - 14					6	0
carbon - 12					7	0
carbon - 12					5	0
	$^{4}he$
	8		8	10
argon - 40		18			18	0
	$^{70}ga$
	$^{70}ga^{+3}$
	4	9		2
	7	8	8

Explanation:

Step1: Recall atomic - related formulas

Atomic number ($Z$) is the number of protons. Mass number ($A$) is the sum of protons and neutrons ($A = Z+N$), where $N$ is the number of neutrons. For a neutral atom, the number of electrons is equal to the number of protons. For an ion, the number of electrons is adjusted according to the charge. Charge = number of protons - number of electrons.

Step2: Fill in the table for tritium ($^3H$)

Name: tritium; Symbol: $^3H$; Atomic number ($Z$) = 1 (since hydrogen has 1 proton); Mass number ($A$) = 3; Number of neutrons ($N$)=$A - Z=3 - 1 = 2$; Number of electrons = 1 (neutral atom); Charge = 0.

Step3: Fill in the table for sodium - 22 ($^{22}Na^+$)

Name: sodium - 22; Symbol: $^{22}Na^+$; Atomic number ($Z$) = 11 (sodium's atomic number); Mass number ($A$) = 22; Number of neutrons ($N$)=$A - Z=22 - 11 = 11$; Since it is a $Na^+$ ion, number of electrons = 10 (lost 1 electron); Charge = + 1.

Step4: Fill in the table for magnesium - 24 ($^{24}Mg$)

Name: magnesium - 24; Symbol: $^{24}Mg$; Atomic number ($Z$) = 12; Mass number ($A$) = 24; Number of neutrons ($N$)=$A - Z=24 - 12 = 12$; Number of electrons = 12 (neutral atom); Charge = 0.

Step5: Fill in the table for magnesium - 25 ($^{25}Mg$)

Name: magnesium - 25; Symbol: $^{25}Mg$; Atomic number ($Z$) = 12; Mass number ($A$) = 25; Number of neutrons ($N$)=$A - Z=25 - 12 = 13$; Number of electrons = 12 (neutral atom); Charge = 0.

Step6: Fill in the table for titanium - 46 ($^{46}Ti^{2 - }$)

Name: titanium - 46; Symbol: $^{46}Ti^{2 - }$; Atomic number ($Z$) = 22 (titanium's atomic number); Mass number ($A$) = 46; Number of neutrons ($N$)=$A - Z=46 - 22 = 24$; Since it is a $Ti^{2 - }$ ion, number of electrons = 24 (gained 2 electrons); Charge=-2.

Step7: Fill in the table for silver - 107 ($^{107}Ag$)

Name: silver - 107; Symbol: $^{107}Ag$; Atomic number ($Z$) = 47 (silver's atomic number); Mass number ($A$) = 107; Number of neutrons ($N$)=$A - Z=107 - 47 = 60$; Number of electrons = 47 (neutral atom); Charge = 0.

Step8: Fill in the table for fluorine - 19 ($^{19}F^-$)

Name: fluorine - 19; Symbol: $^{19}F^-$; Atomic number ($Z$) = 9 (fluorine's atomic number); Mass number ($A$) = 19; Number of neutrons ($N$)=$A - Z=19 - 9 = 10$; Since it is a $F^-$ ion, number of electrons = 10 (gained 1 electron); Charge=-1.

Step9: Fill in the table for carbon - 12 ($^{12}C$)

Name: carbon - 12; Symbol: $^{12}C$; Atomic number ($Z$) = 6; Mass number ($A$) = 12; Number of neutrons ($N$)=$A - Z=12 - 6 = 6$; Number of electrons = 6 (neutral atom); Charge = 0.

Step10: Fill in the table for carbon - 13 ($^{13}C$)

Name: carbon - 13; Symbol: $^{13}C$; Atomic number ($Z$) = 6; Mass number ($A$) = 13; Number of neutrons ($N$)=$A - Z=13 - 6 = 7$; Number of electrons = 6 (neutral atom); Charge = 0.

Step11: Fill in the table for carbon - 14 ($^{14}C$)

Name: carbon - 14; Symbol: $^{14}C$; Atomic number ($Z$) = 6; Mass number ($A$) = 14; Number of neutrons ($N$)=$A - Z=14 - 6 = 8$; Number of electrons = 6 (neutral atom); Charge = 0.

Step12: Fill in the table for carbon - 12 with 7 neutrons

Name: carbon - 12; Symbol: $^{12}C$; Atomic number ($Z$) = 6; Mass number ($A$) = 12; Number of neutrons ($N$) = 7; Number of electrons = 6 (neutral atom); Charge = 0.

Step13: Fill in the table for carbon - 12 with 5 neutrons

Name: carbon - 12; Symbol: $^{12}C$; Atomic number ($Z$) = 6; Mass number ($A$) = 12; Number of neutrons ($N$) = 5; Number of electrons = 6 (neutral atom); Charge = 0.

Step14: Fill in the table for helium - 4 ($^4He$)

Name: helium - 4; Symbol: $^4He$; Atomic number ($Z$) = 2; Mass number ($A$) = 4; Number of neutrons ($N$)=$A - Z=4 - 2 = 2$; Number of electrons = 2 (neutral atom); Charge = 0.

Step15: Fill in the table for oxygen - 16 (assuming the row with atomic number 8 and 8 neutrons is oxygen)

Name: oxygen - 16; Symbol: $^{16}O$; Atomic number ($Z$) = 8; Mass number ($A$) = 16; Number of neutrons ($N$) = 8; Since number of electrons = 10, Charge=-2.

Step16: Fill in the table for argon - 40 ($^{40}Ar$)

Name: argon - 40; Symbol: $^{40}Ar$; Atomic number ($Z$) = 18; Mass number ($A$) = 40; Number of neutrons ($N$)=$A - Z=40 - 18 = 22$; Number of electrons = 18 (neutral atom); Charge = 0.

Step17: Fill in the table for gallium - 70 ($^{70}Ga$)

Name: gallium - 70; Symbol: $^{70}Ga$; Atomic number ($Z$) = 31; Mass number ($A$) = 70; Number of neutrons ($N$)=$A - Z=70 - 31 = 39$; Number of electrons = 31 (neutral atom); Charge = 0.

Step18: Fill in the table for gallium - 70 ion ($^{70}Ga^{3+}$)

Name: gallium - 70 ion; Symbol: $^{70}Ga^{3+}$; Atomic number ($Z$) = 31; Mass number ($A$) = 70; Number of neutrons ($N$)=$A - Z=70 - 31 = 39$; Since it is a $Ga^{3+}$ ion, number of electrons = 28 (lost 3 electrons); Charge = + 3.

Step19: Fill in the table for beryllium - 9 (assuming atomic number 4 and mass number 9 is beryllium)

Name: beryllium - 9; Symbol: $^9Be$; Atomic number ($Z$) = 4; Mass number ($A$) = 9; Number of neutrons ($N$)=$A - Z=9 - 4 = 5$; Number of electrons = 2, Charge = + 2.

Step20: Fill in the table for nitrogen - 15 (assuming atomic number 7 and 8 neutrons is nitrogen)

Name: nitrogen - 15; Symbol: $^{15}N$; Atomic number ($Z$) = 7; Mass number ($A$) = 15; Number of neutrons ($N$)=$A - Z=15 - 7 = 8$; Number of electrons = 8, Charge=-1.

| Name | Symbol | Atomic number | Mass Number | Number of neutrons | Number of Electrons | Charge |
| ---- | ---- | ---- | ---- | ---- | ---- | ---- |
| hydrogen - 2 | $^2H$ | 1 | 2 | 1 | 1 | 0 |
| tritium | $^3H$ | 1 | 3 | 2 | 1 | 0 |
| sodium - 22 | $^{22}Na^+$ | 11 | 22 | 11 | 10 | + 1 |
| magnesium - 24 | $^{24}Mg$ | 12 | 24 | 12 | 12 | 0 |
| magnesium - 25 | $^{25}Mg$ | 12 | 25 | 13 | 12 | 0 |
| titanium - 46 | $^{46}Ti^{2 - }$ | 22 | 46 | 24 | 24 | - 2 |
| silver - 107 | $^{107}Ag$ | 47 | 107 | 60 | 47 | 0 |
| fluorine - 19 | $^{19}F^-$ | 9 | 19 | 10 | 10 | - 1 |
| carbon - 12 | $^{12}C$ | 6 | 12 | 6 | 6 | 0 |
| carbon - 13 | $^{13}C$ | 6 | 13 | 7 | 6 | 0 |
| carbon - 14 | $^{14}C$ | 6 | 14 | 8 | 6 | 0 |
| carbon - 12 | $^{12}C$ | 6 | 12 | 7 | 6 | 0 |
| carbon - 12 | $^{12}C$ | 6 | 12 | 5 | 6 | 0 |
| helium - 4 | $^4He$ | 2 | 4 | 2 | 2 | 0 |
| oxygen - 16 | $^{16}O^{2 - }$ | 8 | 16 | 8 | 10 | - 2 |
| argon - 40 | $^{40}Ar$ | 18 | 40 | 22 | 18 | 0 |
| gallium - 70 | $^{70}Ga$ | 31 | 70 | 39 | 31 | 0 |
| gallium - 70 ion | $^{70}Ga^{3+}$ | 31 | 70 | 39 | 28 | + 3 |
| beryllium - 9 | $^9Be^{2+}$ | 4 | 9 | 5 | 2 | + 2 |
| nitrogen - 15 | $^{15}N^{ - }$ | 7 | 15 | 8 | 8 | - 1 |

Answer:

The completed table is shown above.