Question

#1: Argon has an atomic number of 18. How many protons are in an atom of argon?

A. 17

B. 18

C. 35

D. 52
**My answer: B. 18
(not very sure tho... )

Answer 1

you have to be sure, because the atomic number of an element is ALWYAS equal to the number of protons in that element lol

Answer 2

#2: Boron has an atomic mass of 11. How many neutrons are in its nucleus? Use the periodic table if you wish.

A. 5

B. 6

C. 11

D. 16
**my answer: C. 11
is that right??

Answer 3

oohhh okay so #1 is correct?? the answer is B. 18??

Answer 4

yes

Answer 5

#3: An electrically neutral atom of gallium has 31 electrons and 39 neutrons. What is the mass number for an atom of gallium?

A. 31

B. 35

C. 62

D. 70
**my answer: D. 70

Answer 6

are 2-3 correct??
and lemme post 4-5.. one sec :)

Answer 7

#2 is 6 neutrons lol. just look at the periodic table

Answer 8

aww :( okay, so #2 is B. 6
?? what about #3??

Answer 9

haha it's okay, don't be sad! you'll learn!

Answer 10

number 3 is correct!

Answer 11

haha i hope so!! :) and yayy!! :) kk lemme post 4-5 :) one sec :)

Answer 12

okiee

Answer 13

#4: Mercury has an atomic number of 80 and a mass number of 200. How many neutrons are in one atom of mercury?

A. 200

B. 120

C. 80

D. 40
***My answer: B. 120

Answer 14

#4 is right

Answer 15

#5: An atom of magnesium has 12 protons and 12 electrons. If the atom loses 2 electrons, what will be the charge on the ion that forms?

A. 10

B. 2

C. +2

D. +10
***MY answer: C. +2

Answer 16

yep #5 is correct

Answer 17

yay!! :)
so these are the answers right?
1=B
2=B
3=D
4=B
5=C
???

Answer 18

yep!

Answer 19

awesome! :) thanks :)

Answer 20

awesome! :) thanks :)