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Answer:
109° 27'
Explanation:
The ammonium ion is tetrahedral in shape, all the HNH bonds are exactly at the tetrahedral bond angle since there are only bond pairs in the structure and no lone pairs. Recall that lone pairs decrease the bond angke from the ideal value in a tetrahedron due to higher repulsion.
2 atome nitrogen , 1 is correct
Answer:
Should be a 15 imo
Explanation:
N is one, 4H = 4, S 2 because of the 2 and O 8 because of the 4 and the 2 before the S.
Answer:
A1. Sr + 2
A2. P - 3
B1. Sr3P2
Explanation:
A1. Strontium ion | Sr+2
Description: Strontium(2+) is a strontium cation
Molecular Formula: Sr+2
A2. PubChem CID 5182128
Structure Find Similar Structures
Molecular Formula P-3
B. Strontium phosphide
PubChem CID 166710
Structure Find Similar Structures
Molecular Formula Sr3P2 or P2Sr3