The atomic number of some elements is shown
Element
Beryllium (Be)
Oxygen (0)
Silicon (Si)
Chlorine (CI)
Atomic number
4
8
17
(1) Which elements have a valency of 2?
(a) Be and Si
(b) Si and I
(c) Be and o
(d) Cl and o
Answers
Answered by
5
Answer:
beryllium and oxygen have a valency of 2
Answered by
1
Answer:
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Step-by-step explanation:
c) Be and 0
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