Question

on MINI M
OJI
Q1) An element X belongs to group 1 and 3 period.
a) Give its electronic configuration.
b) Formula when it combines with oxygen
c) State its nature (3)
Q2)An element to 3" period and 17th group of the
a) The electronic configuration of element on its let​

Answer 1

Answer:

Q1.

a)electronic configuration: 2,8,1

b)valency of element X is 1

When combine with oxygen then

X2O will be formed.

c)since element X is electropositive it means it will be a metal so

Nature of oxide : basic

Q2.

a) electronic configuration: 2,8,7

Answer 2

Q1]Name of the element is Sodium.

i) 2, 8 1

ii) Na2O

iii) NaH

iv) Alkaline metal

V) 1

Q2] Left-2,8,6 Sulphur