Question

Fast who can do it this​

Answer 1

Answer:

(a) - 15 (Phosphorus)

(b)- 8 (oxygen)

(c)- 19 (potassium)

(d)- 14 (silicon)

Answer 2

${\mathfrak{\huge{\underline{Answer:}}}}$

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a) Phosphorous ( Atomic No. 15 )

b) Oxygen ( Atomic No. 8 )

c) Potassium ( Atomic No. 19 )

d) Silicon ( Atomic No. 14 )

( Atomic No. 4 - Beryllium ) is not used

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Hope it helps you!