
ATOMUL - PARTEA 1
Authored by IRINA MARIN
Science
9th Grade
Used 11+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
În stratul de valență al atomului de fosfor (Z=15), orbitalul cu energia cea mai joasă este 3s
A
F
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nucleul, partea centrală a atomului:
are sarcină electrică negativă
este neutru din punct de vedere electric
concentrează aproape toată masa atomului
are masa neglijabilă
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Referitor la învelișul de electroni al unui atom, este corect enunțul:
în stratul electronic L sunt 10 orbitali
într-un orbital pot exista maximum doi electroni cu spin opus
intr-un substrat p există maximum 2 electroni
al doilea strat electronic este format din 3 substraturi
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În învelișul electronic al unui atom pot exista cel puțin șapte straturi electronice
A
F
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Raza ionului de sodiu este mai mică decât raza atomului de sodiu
A
F
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Numărul atomic Z al elementului (E), care formează ioni E 2-cu configurația electronică a ultimului strat 3sx3py , este egal cu:
18
12
16
8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Atomul elementului situat în Tabelul periodic în grupa 2 (II A) și perioada 3:
are 3 electroni de valență
are 3 orbitali s, ocupați cu electroni cuplați
face parte din blocul p de elemente
are caracter electronegativ.
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