Answer:
Ca^+2
Explanation:
Hence, the correct option is A.
Hi there
In order for an electron to jump into a higher energy state, it must first absorb energy (heat, light, etc).
When an electron goes back down to the ground state from the excited state, it emits energy usually in the form of a photon.
i hope this helps
Answer:
H
Explanation:
This will give it the perfect balance to roll straight and steady.
Heat needed=mcθ
=7×0.031×(42-17)
=5.425cal