What is the element symbol Period 4 Group 3B​

Sagot :

Answer:

-(2a - 3b + 7) - (-4a + 8)

(-2a + 3b - 7) + (4a - 8)

2a + 3b - 15 <== ANSWER

Explanation:

Answer:

element phosphorus

"the element phosphorus" it's elemental