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Technetium is an element commonly used in medicine. A technetium atom is represented as ^99 _43 Tc. Give the number of protons, neutrons and electrons in this atom of technetium.

9943Tc (how it should be represented in question)
Number of protons = 43 Number of neutrons = 56 Number of electrons = 43
Technetium is given here in nuclear notation. This...

DJ
Answered by Daniel J. Chemistry tutor
3683 Views

Explain the stages of Piaget's theory of cognitive development (4 marks).

Piaget's theory of cognitive development has four main stages of mental development in children. It focuses on how children acquire knowledge throughout their childhood, in a stage-like fashion, as oppose...

SW
Answered by Shona W. Psychology tutor
2965 Views

What is the equation for respiration?

C6H12O6 + 6O2 --> 6CO2 + 6H20 + E

ML
Answered by Maggie L. Biology tutor
2281 Views

What is covalent bonding?

The sharing of electrons between two atoms

ML
Answered by Maggie L. Chemistry tutor
2198 Views

Solve the following equation: x^2- x - 12 = 0

When looking at this equation, we need to think of two numbers that multiply together to give 12 and have a difference of one. We can rewrite the equation as the following: (x-4)(x+3) = 0 Solving for x:Th...

DL
Answered by Daniel L. Maths tutor
2709 Views

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