H-H-H

dcai001
Group 05 Group Name : H-H-H
Group Members :
CAI YAOLONG DEREK, TAY IAN HONG, CHANFANG WEI, GOH JIA XUAN, CYNTHIA HON SZE MUN, CHRISTIANNA TENG RUI SI
1.

Carbon atoms can differ from one another in their number of neutrons and their number of electrons.

Carbon atoms can differ from all other atoms in their number of protons, neutrons and electrons.
2.

The symbol N represents the element nitrogen and stands for the naturally occurring mixture of all isotopes. The symbols 14N and 15N represent specific isotopes with atomic masses of 14 and 15 respectively.
3.

a. There are 94 protons in the nucleus of this isotope.

b. Neptunium has a nucleus with 93 protons and plutonium has a nucleus with 94 protons.

c. Radon-222 contains 86 protons.
4.

A – Control rod assembly
B – Cooling water out of the core
C – Control rods
D – Cooling water into the core
E – Fuel rods
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