
nomor massa dan nomor atom
Authored by martiyas puji rahayu
Chemistry
1st Grade
Used 14+ times

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5 questions
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1.
FILL IN THE BLANK QUESTION
30 sec • 5 pts
Kalium mempunyai nomor atom 19 dan nomor massa 39. Jumlah elektron pada ion Kalium adalah . . .
2.
FILL IN THE BLANK QUESTION
30 sec • 5 pts
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Suatu unsur netral mempunyai 2 elektron dalam kulit pertama, 8 elektron dalam kulitkedua, dan 7 elektron dalam kulit ketiga. Nomor atom unsur itu adalah:
10
8
7
12
17
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur Ca (Kalsium) memiliki nomor atom 20, dalam sistem periodik unsur terletak pada golongan ...
IA
IIA
IB
II B
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4. Unsur Mn dengan nomor massa 55 dan nomor atom 25 memiliki jumlah proton, elektron, dan neutron berturut-turut adalah...
25, 55, 30
25, 30, 25
30, 25, 25
25, 55, 25
25, 25, 30
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