挑战习题
1/5单选题
难度:

1.下列元素中,原子半径最大的是
A
B
C
D
提示1:
5ZCM5Li75peP5LuO5LiK5Yiw5LiL77yM5Y6f5a2Q5Y2K5b6E5L6d5qyh5aKe5aSn77yb
提示2:
5ZCM5ZGo5pyf5LuO5bem5Yiw5Y+z77yM5Y6f5a2Q5Y2K5b6E5L6d5qyh5YeP5bCP44CC
正确答案:Qg==
5ZCM5Li75peP5LuO5LiK5Yiw5LiL77yM5Y6f5a2Q55qE55S15a2Q5bGC5pWw5aKe5aSa77yM5Zug5q2k5Y6f5a2Q5Y2K5b6E5L6d5qyh5aKe5aSn44CC5o6S6ZmkQeOAgUPvvJs8YnI+5ZCM5ZGo5pyf5LuO5bem5Yiw5Y+z77yM5Y6f5a2Q5qC45a+55aSW5bGC55S15a2Q55qE5ZC45byV5Yqb6YCQ5riQ5aKe5aSn77yM5Y6f5a2Q5Y2K5b6E5L6d5qyh5YeP5bCP44CC5Zug5q2k5Y6f5a2Q5Y2K5b6ETmEmZ3Q7Q2zjgII8YnI+57u85LiK77yM6YCJ5oupQumhueOAgg==