Question

an element has atomic number 14 . determine number of electrons , protons, neutron.electron in KLM shell . its valency and its symbol ?

This one also please
2mg + Co^2 ----->2MgO
Na2CO3+CO2+H2O

please ​

Answer 1

Answer:

14 electron 14 proton and 14 neutron

2,8,4

valency is 4

silicon. Si

resend the second question

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Answer 2

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