Question

.
Li
Configuration
Fr
Valency
electron
Be
Alkaline earth metal
family
Carbon family
Halogen family
Ra
C С
F1
ment X (atomic number 17) reacts with an element y (atomic number 20) to form a dire
At
here in the periodic table are elements X and Y placed ?
ssify X and Y as metal(s), non-metal(s) or metalloid(s).
at will be the nature of oxide of element Y ?
the electron dot structure of the divalent halide.
of certain elements in the Periodic Table are ch.
2
2 리
3
13
SECTION - I
1.
Answer all the questions in one word or phrase.
6 x 12 = 3M
On moving across a period from left to right, the number of electrons in the outermost shell increases
from
to
A) 2,8
B) 2, 18
C) 1,8
D) 1,18​

Answer 1

Answer:

option ( A ) is correct....