Which of the following conduct electricity?
sulfur
graphite
diamond
red phosphorus
yellow phosphorus
Correct answer is B
No explanation has been provided for this answer.
10.0 moles dm-3
7.0 moles dm-3
3.5 moles dm-3
2.0 moles dm-3
Correct answer is D
No explanation has been provided for this answer.
i and ii
i, ii and iii
iii and iv
i, iii and iv
Correct answer is D
Atomic radius is the distance from the atom's nucleus to the outer edge of the electron cloud. In general, atomic radius decreases across a period and increases down a group.
An element with atomic number twelve is likely to be
electrovalent with a velocity of 1
electrovalent with a valency of 2
covalent with a valency of 2
covalent with valency of 4
Correct answer is B
No explanation has been provided for this answer.
U = (kM)\(\frac{1}{2}\)
U = (kM)2
U = \(\sqrt{\frac{k}{m}}\)
U = \(\frac{k}{m}\)
Correct answer is C
The relationship between (U) of a gas molecule and the relative molecular mass is \(\bar{U}\) = (\(\frac{k}{m}\))\(^{\frac{1}{2}}\)
or \(\bar{U}\) = \(\sqrt{\frac{k}{m}}\)