Chemistry, asked by ramamanish2004, 11 months ago

two elements atomic number 4 and mass number 9 and Y atomic number 9 and mass no 19 identify x and y

Answers

Answered by mvasu1974

1

Answer:

if you like mark it as brainliest

Explanation:

x- berilium

y- flourine

Answered by anwesha2672

1

See you have to learn all the elements from 1 till 20 atomic number for boards.

X is beryllium

Y is fluorine

Hope it helps you and mark as brainliest please

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