Question

Please help: http://prntscr.com/7hgmps

Answer 1

Use process of elimination. Do you have any ideas?

Answer 2

nope @mastermindkakashi

Answer 3

what do isotopes have to do with protons??

Answer 4

isotopes of an element are the same but weigh differently according to the number of neutrons. since thallium-205 weighs more than thallium-203 (since 205>203) there cannot be fewer protons, that would lead to a completely different element (since atomic number is the number of protons)

Answer 5

hmm ok..... so its D

Answer 6

the fourth option

Answer 7

can u plz help me with this, idk how I got it wrong: http://prntscr.com/7hgpba

Answer 8

the atomic mass unit is an average of the thallium isotope number and how abundant it is in nature. Since the amu is closer to 205 than 203, you can infer that there is more thallium-205. The number has nothing to do with weight.

Answer 9

the answer to number 6 is the second option because thallium always has an atomic number of 81 and the atomic number is equal to the number of protons, which is why you got number 9 wrong.

Answer 10

The atomic number of an element never changes because it represents the number pf protons. If you change the number of protons, you have a completely different element. As previously stated.

Answer 11

do protons always stay the same? @mastermindkakashi

Answer 12

@Ehsan18

Answer 13

yes always the same

Answer 14

its B

Answer 15

@mastermindkakashi is right!

Answer 16

can u please help me with studying for a final? i have a lot of questions @Ehsan18

Answer 17

@mastermindkakashi

Answer 18

I can try my best

Answer 19

sweet! thanks!

Answer 20

Me to will try my best but having my exams too!!

Answer 21

plz help me with both quesionts on this, i dont understand it http://prntscr.com/7hh7nw

Answer 22

guys?

Answer 23

@Ehsan18 do u know this?

Answer 24

okay so on the periodic table, the higher up you go and the farther to the right is the most electronegative

Answer 25

I have to go, so just tag me with your questions and I can get back to you later. Sorry

Answer 26

ok, and how about 13? @Ehsan18 @mastermindkakashi

Answer 27

@Ehsan18

Answer 28

@rosiejd are you good with ionic compunds? do u know the basics?

Answer 29

no, sorry,havent taken the subject in years and i forgot.

Answer 30

ok

Answer 31

http://prntscr.com/7hhft0
@Lokid

Answer 32

plz help

Answer 33

oh woah that one is new doe, what is the lewis structures

Answer 34

https://dr282zn36sxxg.cloudfront.net/datastreams/f-d%3A3d4059a9ff59983ace0a329d34ef6d3ffb36a17fe950586fcb8f3db0%2BIMAGE%2BIMAGE.1


lewis dot structures just show the sharing of valence electrons @Lokid

Answer 35

okay ya sorry i wish i could help but that looks way more advanced than what i did DX so so sorry wish i could help

Answer 36

np thanks doe @Lokid

Answer 37

=D