Science, asked by indradutta012, 1 year ago

An element 'X' has mass number 35 and number of neutrons 18.write atomic number and electronic configurtion of 'X'. Also write group number ,period and valency of 'X'.

Answers

Answered by Dasham10
3
A = 35
N = 18
P = A-N = 35-18 = 17

=> Z = 17

Name of element is Chlorine (Cl)

E.C. = K L M
2 8 7

Valency = -1

Group No. = 17

Period = 3

Hope that the other information helps you.
Answered by sunayana4
7
heyaaaaa.....

heres ur ans......

atomic mass = no of protons + no of neutrons

=>35= 18+ no of proton

=>no of proton= 35-18=17

atomic no =17

electronic configuration = 2,8,7

grp no.= 17

period = 3
valency= 1

hope this helps
brainliest plzzz

sunayana4: group no 17 and period is 3
Dasham10: What are they ? How to find them for a particular element ?
sunayana4: ur class?
Dasham10: 9th
sunayana4: okk....so in 10th u will learn in details
Dasham10: Ohk
Dasham10: Thanks!
sunayana4: but still if u r curious then u can find out in google
sunayana4: mention not dear
Dasham10: :)
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