atomic number
atomic mass
eletrons
symbol
neutrons
100

what is heliums atomic number?

2

100

what is magnesiums atomic mass?

24.305

100

how many electrons does helium have?

2

100

sodiums symbol is?

Na

100

how many neutrons are in potassium?

20 neutrons 

200

what is nitrogens atomic number?

7

200

what is lithiums atomic mass?

6.941

200

how many electrons does hydrogen have?

1

200

nitrogens symbol is?

N

200

how many neutrons are in magnesium?

12

300

what is oxygens atomic number?

8

300

what is oxygens atomic mass?

15.999
300

how many electrons does carbon have?

4

300

hydrogens symbol is?

H

300

how many neutrons does lithium have?

4

400

what is lithiums atomic number?

3

400

what is hydrogens atomic mass?

1.00784

400

how many electrons does chlorine have?

17

400

heliums symbol is?

He

400

how many neutrons does argon have?

22 neutrons 

500

what is magnesiums atomic number?

12

500

what is neons atomic mass?

20.1797

500

how many electrons does sodium have?

11

500

potassiums symbol is?

K

500

fluorine has how many neutrons?

10

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