Atomic Symbols Practice

Which is the number of electrons for the element shown?

• 10

• 16

• 13

• 15

Tags

NGSS.MS-PS1-1

How many neutrons does this isotope of titanium have?

• 22

• 26

• 48

• 70

Tags

NGSS.MS-PS1-1

Elements are represented by chemical symbol.  Symbols are written with

• all lower case letters.

• all capital letters.

• always only one  letter.

• at least and ONLY one capital letter.

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• the mass #

Tags

NGSS.HS-PS1-1

What is the biggest difference between an atom of cobalt (Co) and an atom of nickel (Ni), as shown in the periodic table entries?

• An atom of nickel has more protons.

• An atom of cobalt has more electrons.
  

• An atom of cobalt has a lower number of neutrons.
  

• An atom of nickel has a higher value for atomic mass.

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

How many protons does this isotope of titanium have?

• 48

• 22

• 26

• 70

Tags

NGSS.MS-PS1-1

In a correctly written symbol what would be located in the "A" position?

• number of neutrons

• atomic number

• number of electrons 

• mass number

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