Answer:
Ca generally loses two electrons from its outer shell to form a Ca2+ ion.
Answer:
Explanation:
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One important measure of the rate at which a radioactive substance decays is called half-life, or t1/2. Half-life is the amount of time needed for one half of a given quantity of a substance to decay. Half-lives as short as 10–6 second and as long as 109 years are common.
Answer:
Transition elements are elements which have partially filled d-orbitals and form at least one or more stable ions.
Answer: seas
Explanation:
The ancient astronomers thought the mares on the moon were seas.
Explanation:
Hydrogen does not obey the octet rule. Boron does not always
obey the octet rule and in fact forms Lewis acids such as BF3 which
only has 6 electrons.
