Isotopes

Front

How many neutrons does the isotope of lithium have?

Back

5

Front

What quantities vary between isotopes of an element?

Back

neutrons and atomic mass

Front

Which atom has 4 neutrons? Options: Li-6, Li-7, Li-8, they have the same # of neutrons

Back

Li-7

Front

How many neutrons in C-14?

Back

8

Front

Isotopes are atoms of the same element with different #’s of __________ & therefore different __________. Options: n⁰ ;  atomic #’s, p⁺ ; atomic #’s, e^- ; atomic masses, n⁰ ; atomic masses

Back

n⁰ ; atomic masses

Front

How many neutrons does the isotope ⁸⁹ ₃₆Kr have?

Back

53

Front

Which of the following symbols represent isotopes of the same element?   I. ⁷⁷₃₅X  II. ⁷⁷₃₃X  III. ⁸¹₃₇X  IV. ⁸¹₃₅ X

Back

I and IV

Front

How many neutrons does an atom of the isotope Neon-22 have?

Back

12

Front

When is an atom electrically neutral? Options: protons and neutrons are the same, protons and electrons are the same, neutrons and electrons are the same, neutrons balance the protons and electrons.

Back

protons and electrons are the same

Front

Do carbon-12 and carbon-14 isotopes differ by two protons?

Back

false