Ions & Isotopes

An ion with 2 protons, 3 neutrons, and 4 electrons has a charge of _

• +2

• -2

• +3

• 9

• -4

How many protons, neutrons, and electrons?

• proton = 6, neutron = 4, electron = 3

• proton = 4, neutron = 4, electron = 5

• proton = 4, neutron = 6, electron = 1

• proton = 4, neutron = 2, electron = 3

• proton = 4, neutron = 2, electron = 5

Tags

NGSS.MS-PS1-1

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

• 2

• 34

• 36

• 32

Tags

NGSS.MS-PS1-1

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

What is the name of the pictured isotope?

• Carbon-12
• Carbon-13
• Carbon-7

• Carbon-19

• Carbon-6

Tags

NGSS.MS-PS1-1

What is the name of the pictured isotope?

• Chlorine-52

• Chlorine-17
• Chlorine-35
• Chlorine-18

Tags

NGSS.MS-PS1-1

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

• 53
• 36
• 89
• 125

Isotopes of the same element have the same number of ________ but a different number of _______.

• protons, neutrons

• neutrons, protons

• protons, electrons

• electrons, neutrons

An atom of phosphorus has an atomic number of 15 and a mass number of 31. How many neutrons does it contain?

• 15

• 16

• 31

• 46

Tags

NGSS.MS-PS1-1

This isotope of Titanium has:

​ (a)   protons

22 electrons

​ (b)   neutrons

mass number of ​ (c)  

• 22
• 26
• 48
• 70
• 47
• 21

Tags

NGSS.MS-PS1-1