Elements Isotope

Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.

• n⁰ ;  atomic #’s
• p⁺ ; atomic #’s
• e^- ; atomic masses
• n⁰ ; atomic masses

Tags

NGSS.HS-PS1-8

How many neutrons does the isotope below have?     ⁸⁹ ₃₆Kr

• 53
• 36
• 89
• 125

If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?     I. ⁷⁷₃₅X  II. ⁷⁷₃₃X  III. ⁸¹₃₇X  IV. ⁸¹₃₅ X

• I and II
• III and IV
• I and IV
• I and III

How many neutrons does the isotope below have?     ¹¹²₄₇Ag

• 47
• 65
• 112
• 159

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-8

If X is the symbol for an element, which of the following two symbols represent   isotopes of the same element?     I. ⁴⁴₂₁X  II. ⁴⁴₂₀X  III. ⁴²₁₉X  IV. ⁴²₂₀ X

• I and II
• II and IV
• I and IV
• I and III

How many neutrons does the isotope below have?     ¹³⁰₅₃I

• 183
• 53
• 130
• 77

     How many neutrons does Sulfur-34 have?

• 34
• 16
• 50
• 18

How many protons does ⁵¹Mn have?

• 51
• 25
• 26
• 55

How many neutrons in C-14?

• 6
• 7
• 14
• 8

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70