The atomic number of Magnesium is 12 and its electronic configuration is 2, 8, 2. In forming a compound, it………
a) gains 6 electrons
b) it shares 4 electrons
c) it loses 2 electrons
d) it shares 2 electrons
The atomic number of Magnesium is 12 and its electronic configuration is 2, 8, 2. In forming a compound, its valency is……..
a) 8
b) 5
c) 2
d) 0
The atomic number of Lithium is 3 and its electronic configuration is 2, 1. How many electron/s is/are present in its outermost shell?
a) 2
b) 3
c) 8
d) 1
The atomic number of Lithium is 3 and its electronic configuration is 2, 1. In forming a compound, it………
a) it shares 3 electrons
b) gains 3 electrons
c) it loses 1 electron
d) it shares 5 electrons
The atomic number of Lithium is 3 and its electronic configuration is 2, 1. In forming a compound, its valency is……..
a) 3
b) 5
c) 2
d) 1
The atomic number of Helium is 2 and its electronic configuration is 2. How many electron/s is/are present in its outermost shell?
a) 2
b) 0
c) 8
d) 3
