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Tanzania [10]
3 years ago
7

Which statement is true about the element shown here? A) This element tends to gain electrons to become stable. B) This element

needs to gain two electron to become stable. C) This element tends to lose 2 electrons to become a 2+ ion. D) This element tends to form covalent bonds with other nonmetals.
Physics
2 answers:
cestrela7 [59]3 years ago
8 0

ITS C

This element tends to lose 2 electrons to become a 2+ ion, is the correct statement regarding the element calcium. Calcium has 2 electrons in its outer shell and it is easier to lose them than it is to gain enough to become stable. When stable it has 2 more protons than electrons forming a 2+ ion.

My name is Ann [436]3 years ago
7 0

The answer is C this element tends to lose 2 elections to become a 2+ ion

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f an arrow is shot upward on the moon with velocity of 35 m/s, its height (in meters) after t seconds is given by h(t)=35t−0.83t
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Answer:

The velocity of the arrow after 3 seconds is 30.02 m/s.

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v(t)=\dfrac{dh(t)}{dt}\\\\v(t)=\dfrac{d(35t-0.83t^2)}{dt}\\\\v(t)=35-1.66t

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v(t)=35-1.66t\\\\v(t)=35-1.66(3)\\\\v(t)=30.02\ m/s

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