Question

(CLASS 10 CBSE) An element with atomic number 17 is placed in the group 17 of the long form periodic table. Element with
atomic number 9 is placed above and with atomic number 35 is placed below it. Element with atomic
number 16 is placed left and with atomic number 18 is placed right to it. Which of the following statements
are correct?
a) Valency of the element with atomic number 18 is zero
b) Elements of the element with atomic number 18 is zero
c) Valency of elements with atomic number 9, 17 and 35 is one
d) Element with atomic number 17 is more electronegative than element with atomic numbers 16 and 35


A) a, b and c B) a, c and d C) b, c and d D) a, b and d

Answer 1

Answer:

a,b and c is correct.

as 18 has valence electrons is 0.

9,17,35 has valence electrons 1