Question

Element Symbol Atomic Mass
Numbers of partides
number number Electrone Phone News
1
Hydrogen
Helium
4
2
2
7
3
4
Beryllium
4
4
5
Boron
11
Carbon
12
6
7
14
7
7
7
Nitrogen
Oxygen
8
8
Fluorine
9
Neon
10
10
10
10
Sodium
Na
11
12
12
12
12
12
Magnesium Mg
Aluminium Α.
27
13
13
Silicon
Si
14
28
P
15
31
15
15
Phosphorus
Sulphur
S
16
16.
16
Chlorine
C)
17
17
17
18
Argon
Ar
18
18
18
22
Potassium
K
19
39
19
19
20
Calcium
40
20
20
The nuclide symbol is expressed as X. For
example, the nuclide symbol 351​

Answer 1

Answer:

667 and the sequence of numbers having to change

Answer 2

Answer:

please ask it in the chemistry part

Explanation: