An unknown element is determined to have 22 neutrons and a mass number of 40.
1 answer:
It’s Calcium hope that helps!
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Answer:
1 large
2 small
balance out means remove
Answer; chemical reaction
Answer:
[Ar] 3d10 4s2 4p4
Explanation:
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
Answer:
84.2 grams
Explanation:
you have to multiply 8.42x10^18 to get the answer above
