Question

a. Li, Si, „He, ,,Na, P Which of these
elements belong to be period 3?
b. H, „N, 2, Ca, S, Be, Ar
Which of these elements
belong to the second group?
c. „N, C, 0,,B, A1
Which is the most
electronegative element among
these?
d. Be,C,,,,B, A1
Which is the most
electropositive element among
these?
e. ,,Na,,,,,C1, Si, Mg
Which of these has largest
atoms?
​

Answer 1

He this element belonging to period 3

Ca is belonging to second group

C is the most electronegative element

Be is the most electropositive element

Si has largest atoms