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Element A has two isotopes. The first isotope is present 13.00% of the time and has a mass of 240.39. The second isotope has a mass of 189.67. Calculate the atomic mass of element A.

⭕ 5,590.8

⭕ 233.8

⭕ 16,532.54

⭕ 196.3

⭕ The atomic mass cannot be calculated without more information.

 

What is the shape of ?

⭕ trigonal pyramidal

⭕ tetrahedral

⭕ trigonal planar

⭕ bent

⭕ linear

 

What is the angle of ?

 

 

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