The element with electron configuration 1s2 2s2...
The element with electron configuration 1s2 2s2 2p6 3s2 3p1 belongs to
s-block period 3, group 1
p-block, period 3, group 2
s-block, period 3, group 3
p-block, period 3, group 3
Correct answer is D
1s2 2s2 2p6 3s2 3p1 = 2, 8, 3.
The element is in period 3 and group 3.
The reason for the decrease in the atomic size of elements across a period is that ...
The formula (CH3),3 COH is that of a...
How many Faradays of electricity are required to liberate 9g of aluminium? [Al = 27] ...
Brain tumors can be located by using an isotope of ...
POlyvinyl chloride is used to produce ...
Which of the following does not support the fact that air is a mixture? ...
which of the following metals will show the highest metallic character? ...