Answer:
c
Explanation:
I think that's the answer
Auroras occur when ions from the Sun strike air molecules, causing them to give off bright colors of light.-google
Answer:
The main difference is their energy level, 2s orbital is higher than 1s orbital.
There are five states of matter out of which we encounter three states of matter in our day today life
a) gas b) solid and c) liquid
the main difference between the three is of
a) Inter molecular forces of attraction
b) thermal energy
due to this
a) solid has high intermolecular forces and low thermal energy: thus they have fix shape and occupy fix volume
b) liquid has intermediate forces and medium themal energy. Thus they may have fixed volume and but no fix shape
c) gas has weak intermoelcular forces and high thermal energy. thus they have no fixed volume no fix shape
so in the given problem
the state of the substance D- Gas.
bromine
Explanation:
halogens are a group of elemnts simlar to eachother
flourine, chlorine, and bromine
