Multiple Choice
A strontium-90 atom that has lost 2 electrons has _______ protons, _______neutrons, and _______ electrons.
A) 38; 90; 36
B) 38; 52; 40
C) 38; 52; 36
D) 38; 90; 40
E) 90; 38; 88
Correct Answer:

Verified
Correct Answer:
Verified
Q11: Elements 21 through 30 are known as
Q119: What is the name of the halogen
Q120: Isotopes have _.<br>A)the same atomic mass.<br>B)the same
Q121: Gold prices in early 2016 were approximately
Q122: What is the symbol for magnesium?<br>A)M<br>B)Mg<br>C)Mn<br>D)Mo<br>E)Md
Q123: Give an example of a period 4
Q126: Write the complete atomic symbol with both
Q127: A cation has a _ charge because
Q128: Which has the highest molecular mass?<br>A)Br<sub>2</sub>O<br>B)IBr<sub>2</sub><br>C)CBr<sub>4</sub><br>D)Br<sub>2</sub>O<sub>8</sub><br>E)BrF<sub>5</sub>
Q129: How many grams of P<sub>4</sub> (123.88 g/mol)