1.2 Flashcards
1
Q
what is the trend in atomic radius across a period and why
A
atomic radius decreases as nuclear charge increases so the attractive force between the nucleus and electrons increases
2
Q
state a stable electronic configuration and its element
A
N
1s2 2s2 2p3
3
Q
what is the flame test for lithium
A
crimson red
4
Q
what is the flame test for sodium
A
yellow
5
Q
what is the flame test for potassium
A
lilac
6
Q
what is the flame test for copper (II)
A
green
7
Q
what is the flame test for calcium
A
brick red
