Question

pls solve this immediately​

Answer 1

Answer:

1. X is phosphorous,15 PROTONS
2. as it has more no. of electrons it occupies more shells
3. KOH

Explanation:

1. THE ELEMENT GIVEN HAS 15 ELECTRONS HENCE ITS ATOMIC NUMBER IS 15 i.e, PHOSPHOROUS
2. WHEN ELECTRONS ARE MORE,THE NUMBER OF SHELLS ALSO INCREASE THROUGH WHICH THE ATOM SIZE INCREASES .AND HENCE X^-3 HAS GREATER SIZE THAN X.AND SIZE OF ATOMS DEPENDS ON ELETRONS BUT NOT PROTONS

AS THE STOMIC NO. IS 15 THE NUMBER OF PROTONS ARE 15

3.KOH