View Single Post
khurram usman
#1
Sep20-11, 10:32 AM
P: 79
i got a mcq in my test:

Ionization energy increases:
a) across a period
b) down a group
c) from metal to non-metal
d) all of above

i am confused between option 'a' and 'c'
what should be the right answer?
Phys.Org News Partner Science news on Phys.org
New model helps explain how provisions promote or reduce wildlife disease
Stress can make hard-working mongooses less likely to help in the future
Grammatical habits in written English reveal linguistic features of non-native speakers' languages