Hi1315
Answered

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Sagot :

jamyangnorzin

Explanation:

1,a: I) group 2 = strontium

ii) chlorine

iii) nitrogen

B) i) strontium outer shell=2

ii)nitrogen:outer shell=5

iii) chlorine=7

C)metal

strontium

nickel

molybdenum

cesium

tin

non metal:..

chlorine

nitrogen

neon

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