The frequency stays the same it just gets louder
The correct option is STRONTIUM.
Strontium is a group 2 element, that means it has two electrons in its outermost shell. This element will prefer to lose these two electrons in its outermost shell in order to attain the octet form, therefore, it will form electrovalent bond with non metals which it can donate two electrons to.
Sodium is the reducing agent because a reducing agent is always the donor of electrons.
Answer:
126 m
Explanation:
Distance=time*speed➡42*3=126m.