Chemistry, asked by pathancool19, 4 months ago

consider the given tables

element X Y Z

mass 23 B 40
number

atomic A 20 18
number

number 12 20 C
of Neutron

identify the pair of isotopes

find the number of electons present in M shell in Y

find the valancy of X

Answers

Answered by hiteshmaru888

1

Answer:

don't know the answer

Explanation:

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