Please answer!!No spams

1.	Please answer!!No spams
Answer» ong>Answer: a) Sodium and potassium. Sodium is in GROUP 1A and in 3RD PERIOD. Potassium is in GROUP 1A and in 4TH PERIOD. b) PHOSPHORUS. Phosphorus is in GROUP 5A and in 3RD PERIOD.

Answer»

ong>Answer:

a) Sodium and potassium. Sodium is in GROUP 1A and in 3RD PERIOD. Potassium is in GROUP 1A and in 4TH PERIOD.

b) PHOSPHORUS. Phosphorus is in GROUP 5A and in 3RD PERIOD.

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