Some transition metals can lose varying numbers of electrons to form cations of
ID: 840959 • Letter: S
Question
Some transition metals can lose varying numbers of electrons to form cations of different charges. Which of the following can only have one possible charge?
A) Cu
B) Zn
C) Cr
D) Fe
What is the total number of atoms in one molecule of acetic acid, CH3COOH?
A) 8
B) 5
C) 7
D) 3
Which compound has a covalent bond?
A) NaCl
B) H2
C) LiH
D) KBr
The correct symbols for potassium, phosphorus, and lead are ______
A) Na, P, Po
B) K, Po, Pb
C) K, P, Pb
D) P, Po, La
Which pair has the same number valence electrons?
A) magnesium and potassium
B) argon and xenon
C) lithium and calcium
D) phosphorus and tellurium
Which is not a metal?
A) Mg
B) Pt
C) Ca
D) Kr
Which element has the lowest number of valence electrons?
A) argon
B) phosphorus
C) lithium
D) magnesium
Explanation / Answer
D) Fe:- Fe2+,Fe3+
A) 8 4 carbon atom 4 hydrogen atom 2 oxygen atom
C) LiH, because both are very small in size
C) K, P, Pb
B) argon and xenon 18th group element.
D) Kr 18th group element
D) C) lithium
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