In the third period of periodic table, which of the following is/are metal/s?
a) sodium
b) magnesium
c) aluminum
d) all of these
In the third period of periodic table, which of the following is/are metalloid/s?
a) phosphorus and chlorine
b) silicon
c) sulphur and argon
d) all of these
Ongoing along a group from top to bottom, the metallic character…….
a) increases
b) decreases
c) remains constant
d) none of these
In group-IV, first element carbon is…..
a) metal
b) non-metal
c) metalloid
d) all of these
In group-IV,
which of the following is/are metalloid/s?
a) silicon
b) germanium
c) tin and lead
d) both a and b
In group-IV, which of the following is/are metal/s?
a) silicon
b) germanium
c) tin and lead
d) both a and b
