Question

write a symbol and atomic masses of following elements​

Answer 1

Explanation:

See the attachment

hope it helps.....

Answer 2

Explanation:

hydrogen=H,1.008grams

lithium =Li,7grams

sodium =Na,23grams

pottassium=K,39grams

neon =Ne,20grams

Argon=Ar,40grams

aluminium=Al,27g

boron=B,10g

carbon=C,12g

silicon=Si,28g

phosphorus =P,31g

oxygen=O,16g

sulfur=S,32g

flourine=F,18g

chlorine=Cl,35g