Answer:
The answer is: the number of unpaired valence electrons
Explanation:
The valence electrons are the number of electrons present in outer shell of an atom that participate in chemical bond formation, if the outer shell is not completely filled.
Covalent bond formation occurs when two atoms contribute one valence electron each to form a bond. Thus the number of covalent bonds that an element can form, can be determined by the number of unpaired valence electrons.
Therefore, the nature and the number of bonds formed by the element and the chemical properties of the element can be determined by the number of valence electrons present in the outer shell of the element.
Answer:
Tantalium is a Transition metal.
Osmium is a Transition metal.
Thorium is radioactive Metal.
I think both of them are but I really don't know
Answer:
a) Secretion of unpleasant liquids which make them distasteful.
Possession of spines or thorns or irritating hairs which cause pain or irritation on contact.
Possession of poisonous parts which cause pain or itching or death or swelling on contact.
b) An anion is a negatively charged atom (or group of atoms).
OR
An anion is an ion formed when an atom (or group of atoms) gain electrons.
c) i. NH4OH and dilute HCL.
= Ammonium chloride, water
ii. CACO3 and dilute HCL.
= Calcium chloride, water, carbon dioxide or carbon (IV) oxide.
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