A chemical formula is used to describe the types of…….
a) ions and their numbers
b) atoms and their numbers
c) molecules and their numbers
d) valence electrons and their numbers
Structure Response Questions:
The atomic number of Nitrogen is 7 and its electronic configuration is 2, 5. How many electron/s is/are present in its outermost shell?
a) 2
b) 5
c) 8
d) 3
The atomic number of Nitrogen is 7 and its electronic configuration is 2, 5. In forming a compound, it………
a) gains 3 electrons
b) it shares 3 electrons
c) it loses 5 electrons
d) both a and b
The atomic number of Nitrogen is 7 and its electronic configuration is 2, 5. In forming a compound, its valency is……..
a) 3
b) 5
c) 2
d) 0
The atomic number of Beryllium is 4 and its electronic configuration is 2, 2. How many electron/s is/are present in its outermost shell?
a) 2
b) 4
c) 0
d) 3
