Group 4 is a group of elements in the periodic table. It contains the elements titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf). This group lies in the d-block of the periodic table. The group itself has not acquired a trivial name; it belongs to the broader grouping of the transition metals. The three Group 4 elements that occur naturally are titanium (Ti) , zirconium (Zr) and hafnium (Hf) .
The battle broke out at Concord. Seventy-three British soldiers were killed and over 200 were wounded. The Americans lost 49 soldiers and suffered 39 wounded. Late on the night of April 18th, 1775 British troops departed Boston for Concord and Lexington in pursuit of Colonial arms.
The Battle of Concord, Massachusetts. The Battle of Concord, in Massachusetts, marks the start of the Revolutionary War. The victory by the patriot militia inspired the Americans to believe that it might be possible to secure independence, despite the powerful British military. The battle took place on April 19, 1775. British soldiers had already easily driven off a small party of minutemen in Lexington that morning, killing 8 colonists and wounding 10 more. The minutemen had gathered in Lexington after Paul Revere's midnight ride had warned them that the British are coming..